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{{short description|Wikipedia list article}}
'''Facebook''' is a social network service website launched on February 4, 2004 by [[Mark Zuckerberg]]. The following is a list of software and technology features that can be found on the Facebook website and mobile app and are available to users of the [[social media]] site.
== Facebook structure ==
=== News Feed ===
{{Main|News Feed}}
The news feed is the primary system through which users are exposed to content posted on the network. Using a secret method (initially known as [[EdgeRank]]), Facebook selects a handful of updates to actually show users every time they visit their feed, out of an average of 1500 updates they can potentially receive.<ref>{{cite news|first1=Robinson|last1=Meyer|title=Everything We Know About Facebook's Secret Mood Manipulation Experiment|url=https://www.theatlantic.com/technology/archive/2014/06/everything-we-know-about-facebooks-secret-mood-manipulation-experiment/373648/|newspaper=The Atlantic}}</ref><ref>{{Cite news|url=https://www.facebook.com/business/news/News-Feed-FYI-A-Window-Into-News-Feed|title=Facebook for Business|work=Facebook for Business|access-date=2017-12-03|language=en-US}}</ref>
On September 6, 2006, [[Ruchi Sanghvi]] announced a new home page feature called News Feed. Originally, when users logged into Facebook, they were presented with a customizable version of their own profile. The new layout, by contrast, created an alternative home page in which users saw a constantly updated list of their friends' Facebook activity. News Feed highlights information that includes profile changes, upcoming events, and birthdays, among other updates. This has enabled spammers and other users to manipulate these features by creating illegitimate events or posting fake birthdays to attract attention to their profile or cause. News Feed also shows conversations taking place between the walls of a user's friends. An integral part of the News Feed interface is the Mini Feed, a news stream on the user's profile page that shows updates about that user. Unlike in the News Feed, the user can delete events from the Mini Feed after they appear so that they are no longer visible to profile visitors. In 2011, Facebook updated the News Feed to show top stories and most recent stories in one feed, and the option to highlight stories to make them top stories, as well as to un-highlight stories. In response to users' criticism, Facebook later updated the News Feed to allow users to view recent stories first.
Initially, the addition of the News Feed caused some discontent among Facebook users. Many users complained that the News Feed was too cluttered with excess information. Others were concerned that the News Feed made it too easy for other people to track activities like changes in relationship status, events, and conversations with other users. This tracking is often casually referred to as "Facebook-Stalking". In response to this dissatisfaction, creator [[Mark Zuckerberg]] issued an apology for the site's failure to include appropriate customizable privacy features. Thereafter, users were able to control what types of information were shared automatically with friends. Currently, users may prevent friends from seeing updates about several types of especially private activities, although other events are not customizable in this way.
With the introduction of the "New Facebook" in early February 2010 came a complete redesign of the pages, several new features and changes to News Feeds. On their personal Feeds (now integrated with Walls), users were given the option of removing updates from any application as well as choosing the size they show up on the page. Furthermore, the community feed (containing recent actions by the user's friends) contained options to instantly select whether to hear more or less about certain friends or applications.
On March 7, 2013, Facebook announced a redesigned newsfeed.
=== Friends ===
{{Also|Friending and following}}
It is also possible to remove a user from one's friends, which is referred to as "unfriending" by Facebook.<ref>{{cite web | url =
Facebook profiles also have advanced privacy features to restrict content to certain users, such as non-friends or persons on a specific list.
At one point, Facebook had introduced
=== Wall ===
The Wall is the original profile space where Facebook users' content until December 2011 was displayed. It allowed the posting of messages, often short or temporal notes, for the user to see while displaying the time and date the message was written. A user's Wall is visible to anyone with the ability to see their full profile, and friends' Wall posts appear in the user's News Feed.
In July 2007, Facebook allowed users to post attachments to the Wall, whereas previously the Wall was limited to text only.<ref>{{cite web | last = Der | first = Kevin | url = http://blog.facebook.com/blog.php?post=3532972130 | title = Facebook is off-the-wall | access-date = 2007-07-30 }}</ref> In May 2008, the Wall-to-Wall for each profile was limited to only 40 posts. Facebook later allowed users to insert HTML code in boxes attached to the wall via apps like Static FBML which has allowed marketers to track use of their fan pages with Google Analytics.
The concept of tagging in status updates, an attempt to imitate Twitter,<ref name=Parr>{{cite web | last = Parr | first = Ben | url = http://mashable.com/2009/09/14/facebook-status-tagging-live/ | title = BREAKING: Facebook Introduces @Mentions in Status Updates | publisher = [[Mashable]] | date = 2009-09-10 | access-date = 2013-08-07 }}</ref> began September 14, 2009. This meant putting the name of a user, a brand, an event or a group<ref name="Ostrow">{{cite web|url=http://mashable.com/2009/09/14/facebook-status-tagging-live/|title=BREAKING: Facebook’s @Mentions Feature Is Live|last=Ostrow|first=Adam|date=2009-09-14|publisher=[[Mashable]]|access-date=2013-08-07}}</ref> in a post in such a way that it linked to the wall of the Facebook page being tagged, and made the post appear in news feeds for that page, as well as those of selected friends.<ref>{{cite news | last = Luck | first = Carolyn | url= http://yourbusiness.azcentral.com/tag-someone-sentence-facebook-5164.html | title = How to Tag Someone in a Sentence on Facebook | work = [[The Arizona Republic]] | agency = Demand Media |access-date = 2013-07-26 }}</ref> This was first done using the "@" symbol followed by the person's name. Later, a numerical ID for the person could be used. Visually, this was displayed with bold text.<ref name=Gilbert>{{cite web | last = Gilbert | first = Jason | url = http://www.huffingtonpost.com/2011/12/02/facebook-photo-tag-trick_n_1126202.html | title = Facebook Trick Lets You Tag Photos With Any Name You Want To – ANY Name At All | work = Huffington Post | date = 2011-12-02 | access-date = 2013-07-26 }}</ref> Early in 2011, tagging in comments was added.
In addition to postings by other users, the Wall also displayed other events that happened to the user's profile. This included when information was changed, when they changed their profile picture, and when they connected with new people, among other things.
The Wall has been replaced by the Timeline profile layout, which was introduced in December 2011.
=== Timeline ===
In September 2011, Facebook introduced
=== Likes and Reactions ===
{{Main|Facebook like button}}
[[File:Facebook logo thumbs up like transparent SVG.svg|thumb|
The like button, first enabled on February 9, 2009,<ref>{{cite web |first=Jason |last=Kincaid |title=Facebook Activates "Like" Button; FriendFeed Tires Of Sincere Flattery |url=https://techcrunch.com/2009/02/09/facebook-activates-like-button-friendfeed-tires-of-sincere-flattery/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=February 9, 2009 |access-date=May 31, 2017}}</ref> enables users to easily interact with status updates, comments, photos, links shared by friends, videos and advertisements. Once clicked by a user, the designated content appears in the [[News Feed]]s of that user's friends,<ref>{{cite web |first=JP |last=Mangalindan |title=Facebook Likes don't go as far as they used to in News Feed update |url=http://mashable.com/2015/04/21/news-feed-facebook-likes/ |website=[[Mashable]] |date=April 21, 2015 |access-date=May 31, 2017}}</ref><ref>{{cite web |first=Josh |last=Constine |title=How Facebook News Feed Works |url=https://techcrunch.com/2016/09/06/ultimate-guide-to-the-news-feed/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=September 6, 2016 |access-date=May 31, 2017}}</ref> and the button also displays the number of other users who have liked the content, including a full or partial list of those users.<ref>{{cite web |title=Like and React to Posts |url=https://www.facebook.com/help/1624177224568554/ |website=Facebook Help Center |publisher=Facebook |access-date=May 31, 2017}}</ref> The like button was extended to comments in June 2010.<ref>{{cite web |first=Chloe |last=Albanesius |title=Facebook Adds Ability to 'Like' Comments |url=https://www.pcmag.com/article2/0,2817,2365190,00.asp |website=[[PC Magazine]] |publisher=[[Ziff Davis]] |date=June 17, 2010 |access-date=May 31, 2017}}</ref> After extensive testing<ref name="verge-reactions"/> and years of questions from the public about whether it had an intention to incorporate a "Dislike" button,<ref>{{cite web |first=Chris |last=Johnston |title=No dislike button for Facebook, declares Zuckerberg |url=https://www.theguardian.com/technology/2014/dec/12/no-dislike-button-for-facebook-declares-zuckerberg |website=[[The Guardian]] |publisher=[[Guardian Media Group]] |date=December 12, 2014 |access-date=May 31, 2017}}</ref> Facebook officially rolled out
=== Comments ===
To mark the 30th anniversary of the GIF, [[Facebook]] has introduced a new feature enabling users to add [[GIF]]s to comments.
=== Messages and inbox ===
{{Main|Facebook Messenger}}
In March 2015, Facebook announced that it would start letting businesses and users interact through Messenger with features such as tracking purchases and receiving notifications, and interacting with customer service representatives. It also announced that third-party developers could integrate their apps into Messenger, letting users enter an app while inside Messenger and optionally share details from the app into a chat.<ref>{{cite web |first=Hope |last=King |title=7 big changes coming to Facebook |url=https://money.cnn.com/2015/03/25/technology/facebook-f8-messenger/ |website=[[CNN]] |date=March 25, 2015 |access-date=June 2, 2017}}</ref> In April 2016, it introduced an [[API]] for developers to build [[Software agent|chatbots]] into Messenger, for uses such as news publishers building bots to give users news through the service,<ref>{{cite web |first=Casey |last=Newton |title=Facebook launches a bot platform for Messenger |url=https://www.theverge.com/2016/4/12/11395806/facebook-messenger-bot-platform-announced-f8-conference |website=[[The Verge]] |publisher=[[Vox Media]] |date=April 12, 2016 |access-date=June 2, 2017}}</ref> and in April 2017, it enabled the [[M (virtual assistant)|M virtual assistant]] for users in the U.S., which scans chats for keywords and suggests relevant actions, such as its payments system for users mentioning money.<ref>{{cite web |first=Nick |last=Statt |title=Facebook’s AI assistant will now offer suggestions inside Messenger |url=https://www.theverge.com/2017/4/6/15200836/facebook-messenger-m-suggestions-ai-assisant |website=[[The Verge]] |publisher=[[Vox Media]] |date=April 6, 2017 |access-date=June 2, 2017}}</ref><ref>{{cite web |first=Josh |last=Constine |title=Facebook Messenger’s AI ‘M’ suggests features to use based on your convos |url=https://techcrunch.com/2017/04/06/facebook-messengers-ai-m-suggests-features-to-use-based-on-your-convos/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=April 6, 2017 |access-date=June 2, 2017}}</ref> Additionally, Facebook expanded the use of bots, incorporating group chatbots into Messenger as "Chat Extensions", adding a "Discovery" tab for finding bots, and enabling special, branded [[QR code]]s that, when scanned, take the user to a specific bot.<ref>{{cite web |first=Josh |last=Constine |title=Facebook Messenger launches group bots and bot discovery tab |url=https://techcrunch.com/2017/04/18/facebook-bot-discovery/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=April 18, 2017 |access-date=June 2, 2017}}</ref>
In August 2018, Facebook discontinued users' ability to post to their Timeline using SMS.
=== Notifications ===
Notifications tell the user that something has been added to his or her profile page. Examples include: a message being shared on the user's wall or a comment on a picture of the user or on a picture that the user has previously commented on. Initially, notifications for events were limited to one per event; these were eventually grouped category wise. For instance, 10 users having liked a user's picture now count for one notification, whereas in the earlier stages, these would have accounted for ten separate notifications. The number of notifications can be changed in the settings section, to a maximum of 99. There is a red notification counter at the top of the page, which if clicked displays the most recent ones.
=== {{anchor|Facebook Groups}}Groups ===
[[File:Facebook advertising.jpg|thumb|Human billboard at the [[National Multicultural Festival]] advertising Canberra in the city news feed]]
Facebook Groups can be created by individual users. Groups allow members to post content such as links, media, questions, events, editable documents, and comments on these items.
Groups are used for collaboration and allow discussions, events, and numerous other activities. They are a way of enabling a number of people to come together online to share information and discuss specific subjects. They are increasingly used by clubs, companies and public sector organizations to engage with stakeholders, be they members of the public, employees, members, service users, shareholders or customers. Groups can have three different levels of privacy settings:
* "Open" means both the group, its members and their comments are visible to the public (which includes non-members) but they cannot interact without joining.
* "Secret" means that nothing can be viewed by the public unless a member specifically invites another user to join the group.<ref>{{cite web|url = https://www.facebook.com/help/220336891328465|title = What are the privacy options for groups?|website = Facebook Help Center}}</ref>
Previously, in October 2010, there were version 0 (legacy) and version 1 (current) groups.<ref>{{cite web|url=https://www.facebook.com/blog.php?post=434700832130 |title=New Groups: Stay Closer to Groups of People in Your Life |publisher=Facebook |access-date=2013-06-14}}</ref> Version 1 or "new" groups can contain the name of the group in their URL if the email-address of the group is set. Groups do not have a RSS feed to export the wall or the member list, such as Pages or Events have, but third parties provide such service if the group is set to an "open" privacy setting. All groups have since been migrated to a single design.<ref>{{cite web|url=https://developers.facebook.com/docs/apps/migrations/completed-changes#july_2013 |title=Facebook Migrations: Removing 'version' field for Groups |publisher=Facebook |access-date=2016-02-09}}</ref>
== Applications ==
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=== Fundraising ===
In December 2013, Facebook enabled a "Donate" button for charities and non-profit organizations to raise money.<ref>{{cite web |first=Josh |last=Constine |title=Facebook Launches "Donate" Button For Non-Profits That Also Collects Billing Info For Itself |url=https://techcrunch.com/2013/12/16/facebook-donate-now-button/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=December 16,
=== Status updates === "Status The ''is'' updates were followed by the "What are you doing right now?" status update question; in March 2009, the question was changed to "What's on your mind?"<ref>{{ cite news | first=Claire | last=Suddath | title=Facebook Wants to Read Your Mind | date=2009-03-13 | work =Time | url =http://www.time.com/time/business/article/0,8599,1885010,00.html | access-date = 2010-02-24 }}</ref> In 2009, Facebook added the feature to tag certain friends (or groups, etc.) within one's status update by adding an ''@'' character before their name, turning the friend's name into a link to their profile and including the message on the friend's wall. Tagging has since been updated to recognize friends' names by typing them into a status while a list of friends whose names match the inputted letters appears. A large percentage of the updates that are posted are humorous and as a result, many apps, websites and books have sprung up to help users to update their own.
=== Subscribe ===
In September 2011, Facebook launched a "Subscribe" button, allowing users to follow public updates from people without requiring a Facebook friendship connection.<ref>{{cite web |first=Jason |last=Kincaid |title=Facebook Launches Twitter-Like ‘Subscriptions’, Lets You Share With Unlimited Users |url=https://techcrunch.com/2011/09/14/facebook-launches-twitter-like-subscriptions-lets-you-share-with-unlimited-users/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=September 14, 2011 |access-date=July 1, 2017}}</ref><ref>{{cite web |first=Ben |last=Parr |title=Facebook Launches Subscribe Button for Following Anyone's Public Updates |url=http://mashable.com/2011/09/14/facebook-subscribe-button/ |website=[[Mashable]] |date=September 14, 2011 |access-date=July 1, 2017}}</ref> The feature was expanded to Pages in July 2012,<ref>{{cite web |first=Brittany |last=Darwell |title=Facebook tests subscribe button for pages to make it easier for users to receive updates without clicking Like |url=http://www.adweek.com/digital/facebook-tests-subscribe-button-for-pages-to-allow-users-to-receive-updates-without-clicking-like/ |website=[[Adweek]] |publisher=Beringer Capital |date=July 24, 2012 |access-date=July 1, 2017}}</ref> and to stories in the News Feed in August 2012.<ref>{{cite web |first=Brittany |last=Darwell |title=Facebook adds ‘subscribe to page’ button to News Feed stories |url=http://www.adweek.com/digital/facebook-adds-subscribe-to-page-button-to-news-feed-stories/ |website=[[Adweek]] |publisher=Beringer Capital |date=August 22, 2012 |access-date=July 1, 2017}}</ref>
=== Ticker ===
In September 2011, Facebook launched the "Ticker", a continually-updated feed on the right side of the screen showing friends' activities, including "likes", status updates, and comments.<ref>{{cite web |first=Jason |last=Kincaid |title=Facebook News Feed Gets Smarter— And The Ticker Makes Its Big Debut |url=https://techcrunch.com/2011/09/20/facebook-news-feed-gets-smarter%E2%80%94%C2%A0and-the-ticker-makes-its-big-debut/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=September 20, 2011 |access-date=December 15, 2017}}</ref> The feed was criticized by users for offering a quiet way to stalk users' every move, prompting the company to consider removing it in a March 2013 redesign, though never did.<ref>{{cite web |first=Josh |last=Constine |title=Facebook Redesign Kills Ticker, Almost |url=https://techcrunch.com/2013/03/08/facebook-ticker-disappeared/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=March 8, 2013 |access-date=December 15, 2017}}</ref> In December 2017, the company officially ended the "Ticker" feature, though quietly and without an announcement or explanation.<ref>{{cite web |first=Ingrid |last=Lunden |title=Time’s up for the Ticker? Facebook appears to axe feed for tracking your friends’ activity |url=https://techcrunch.com/2017/12/10/times-up-for-facebook-ticker/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=December 10, 2017 |access-date=December 15, 2017}}</ref><ref>{{cite web |first=Steve |last=Dent |title=Facebook's 'ticker,' aka creeper feed, is no more |url=https://www.engadget.com/2017/12/11/facebook-ticker-feed-killed/ |website=[[Engadget]] |publisher=[[Oath Inc.]] |date=December 11, 2017 |access-date=December 15, 2017}}</ref>
=== URL shortener ===
Starting June 2009, Facebook lets users choose a username specifically for their profile, enabling them to share links bearing their own www.facebook.com/username URL address.<ref>{{cite web |first=Ben |last=Parr |title=Facebook to Launch Vanity URLs for All |url=http://mashable.com/2009/06/09/facebook-vanity-urls/ |website=[[Mashable]] |date=June 9, 2009 |access-date=July 1, 2017}}</ref> There are limitations, however, to what usernames can be used, including only alphanumerical characters (A-Z, 0–9), a length of over five characters, only one username that is unique to the profile, and must adhere to Facebook's Statement of Rights and Responsibilities agreement.<ref>{{cite web |title=What are the guidelines around creating a custom username for my Page or profile? |url=https://www.facebook.com/help/105399436216001 |website=Facebook Help Center |publisher=[[Facebook]] |access-date=July 1, 2017}}</ref> The following December, Facebook launched its own [[URL shortener]] based on the FB.me domain name.<ref>{{cite web |first=Ben |last=Parr |title=fb.me: Facebook Now Has Its Own URL Shortener |url=http://mashable.com/2009/12/14/fb-me/ |website=[[Mashable]] |date=December 14, 2009 |access-date=July 1, 2017}}</ref><ref>{{cite web |first=Eric |last=Eldon |title=Facebook Testing New URL Shortener, fb.me |url=http://www.adweek.com/digital/facebook-testing-new-url-shortener-fb-me/ |website=[[Adweek]] |publisher=Beringer Capital |date=December 14, 2009 |access-date=July 1, 2017}}</ref>
=== Verified accounts ===
''[[TechCrunch]]'' reported in February 2012 that Facebook would introduce a "Verified Account" concept, denoting official pages for public figures. Such pages gain more prominence in the "People To Subscribe To" suggestions lists. Persons with established stage names, such as Stefani Germanotta known as [[Lady Gaga]], can also choose to use their specific stage name for their profile, with the real name in the profile's "About" page. However, at the time, the feature did not show any visual signs of distinction from other pages.<ref>{{cite web |first=Josh |last=Constine |title=Facebook Launches Verified Accounts and Pseudonyms |url=https://techcrunch.com/2012/02/15/facebook-verified-accounts-alternate-names/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=February 15, 2012 |access-date=July 1, 2017}}</ref><ref>{{cite web |first=Emil |last=Protalinski |title=Facebook to launch verified accounts, pseudonyms |url=http://www.zdnet.com/article/facebook-to-launch-verified-accounts-pseudonyms/ |website=[[ZDNet]] |publisher=[[CBS Interactive]] |date=February 15, 2012 |access-date=July 1, 2017}}</ref> In May 2013, the concept was updated to include a blue checkmark badge to highlight the account's Verified status.<ref>{{cite web |first=Darrell |last=Etherington |title=Facebook Unveils Verified Pages And Profiles, Takes A Page From Twitter’s Playbook |url=https://techcrunch.com/2013/05/29/facebook-unveils-verified-pages-and-profiles-takes-a-page-from-twitters-playbook/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=May 29, 2013 |access-date=July 1, 2017}}</ref><ref>{{cite web |first=Dan |last=Seifert |title=Facebook launches verified pages and profiles for prominent public figures and brands |url=https://www.theverge.com/2013/5/29/4376526/facebook-verified-pages-profiles |website=[[The Verge]] |publisher=[[Vox Media]] |date=May 29, 2013 |access-date=July 1, 2017}}</ref> In October 2015, Facebook introduced a "gray badge" verification system for local businesses with physical addresses, with the gray color intended to differentiate from its typical blue checkmarks assigned to celebrities, public figures, sports teams and media organizations.<ref>{{cite web |first=Martin |last=Beck |title=New: Facebook Is Rolling Out Verified Badges For Local Business Pages |url=https://marketingland.com/new-facebook-is-rolling-out-verified-badges-for-local-business-pages-145276 |website=Marketing Land |date=October 6, 2015 |access-date=December 7, 2017}}</ref>
=== Hash-tagging support ===
In June 2013, Facebook introduced its support for clickable [[hashtag]]s to help users search for topics being actively discussed on the social network.<ref>{{cite web |first=Matt |last=Warman |title=Facebook hashtags #introduced |url=https://www.telegraph.co.uk/technology/facebook/10117483/Facebook-hashtags-introduced.html |website=[[The Daily Telegraph|The Telegraph]] |date=June 13, 2013 |access-date=July 1, 2017}}</ref><ref>{{cite web |first=Christina |last=Warren |title=Facebook Finally Gets Hashtag Support |url=http://mashable.com/2013/06/12/facebook-hashtag-support/ |website=[[Mashable]] |date=June 12, 2013 |access-date=July 1, 2017}}</ref>
=== Impressum ===
In March 2014, some page administrators in Italy started being prompted to add an [[impressum]] to their Facebook page, described as "a legally mandated statement of the ownership and authorship of a document".<ref>{{cite web |first=David |last=Cohen |title=‘Impressum’ Added To Facebook Page Descriptions For Some Pages In Italy? |url=http://www.adweek.com/digital/impressum/ |website=[[Adweek]] |publisher=Beringer Capital |date=March 27, 2014 |access-date=July 1, 2017}}</ref>
===Tor hidden service===
{{Main|facebookcorewwwi.onion}}
In October 2014, Facebook announced that users could connect to the website through a [[Tor hidden service]] using the privacy-protecting [[Tor browser]] and encrypted using [[Secure Sockets Layer|SSL]].<ref name="ars-tor">{{cite web |first=Robert |last=Lemos |title=Facebook offers hidden service to Tor users |url=https://arstechnica.com/security/2014/10/facebook-offers-hidden-service-to-tor-users/ |website=[[Ars Technica]] |publisher=[[Condé Nast]] |date=October 31, 2014 |access-date=June 14, 2017}}</ref><ref name="zdnet-tor">{{cite web |first=Chris |last=Duckett |title=Facebook sets up hidden service for Tor users |url=http://www.zdnet.com/article/facebook-sets-up-hidden-service-for-tor-users/ |website=[[ZDNet]] |publisher=[[CBS Interactive]] |date=October 31, 2014 |access-date=June 14, 2017}}</ref> Announcing the feature, Facebook engineer [[Alec Muffett]] said that "Facebook's onion address provides a way to access Facebook through Tor without losing the cryptographic protections provided by the Tor cloud. [...] It provides end-to-end communication, from your browser directly into a Facebook datacenter."<ref name="ars-tor" /><ref name="zdnet-tor" />
=== "Say Thanks" ===
In November 2014, Facebook introduced "Say Thanks", an experience that lets user create personalized video greeting cards for friends on Facebook.<ref>{{cite web |first=Stuart |last=Dredge |title=Facebook's Say Thanks: shared social celebration from clowns to sausages |url=https://www.theguardian.com/technology/2014/nov/13/facebook-say-thanks-friends-video-cards |website=[[The Guardian]] |publisher=[[Guardian Media Group]] |date=November 13, 2014 |access-date=July 1, 2017}}</ref>
=== Call-to-Action button ===
In December 2014, Facebook announced that Pages run by businesses can display a so-called "call-to-action button" next to the page's like button. "Call to action" is a customizable button that lets page administrators add external links for easy visitor access to the business' primary objective, with options ranging from "Book Now", "Contact Us", "Use App", "Play Game", "Shop Now", "Sign Up", and "Watch Video".<ref>{{cite web |first=David |last=Cohen |title=Facebook Debuts Call-to-Action Buttons for Pages |url=http://www.adweek.com/digital/page-admins-create-call-to-action-buttons/ |website=[[Adweek]] |publisher=Beringer Capital |date=December 11, 2014 |access-date=July 1, 2017}}</ref> Initially only rolled out in the United States, the feature was expanded internationally in February 2015.<ref>{{cite web |title=How to Get the Most out of Your Facebook Page’s Call to Action Button |url=http://www.adweek.com/digital/how-to-get-the-most-out-of-your-facebook-pages-call-to-action-button/ |website=[[Adweek]] |publisher=Beringer Capital |date=February 25, 2015 |access-date=July 1, 2017}}</ref>
=== Snooze ===
In September 2017, Facebook began testing a "Snooze" button, letting users temporarily unfollow friends for 24 hours, 7 days or 30 days.<ref>{{cite web |first=Josh |last=Constine |title=Facebook ‘Snooze’ button temporarily hides people in your feed |url=https://techcrunch.com/2017/09/14/facebook-snooze/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=September 14, 2017 |access-date=December 15, 2017}}</ref><ref>{{cite web |first=Chris |last=Welch |title=Facebook is testing a snooze feature that temporarily mutes your friends |url=https://www.theverge.com/2017/9/14/16307604/facebook-snooze-new-feature |website=[[The Verge]] |publisher=[[Vox Media]] |date=September 14, 2017 |access-date=December 15, 2017}}</ref> The following December, the feature was enabled for all users, though the period of temporary unfollowing is specifically for 30 days.<ref>{{cite web |first=Sarah |last=Perez |title=Facebook adds a Snooze button for muting people, groups and Pages for 30 days |url=https://techcrunch.com/2017/12/15/facebook-adds-a-snooze-button-for-muting-people-groups-and-pages-for-30-days/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=December 15, 2017 |access-date=December 15, 2017}}</ref><ref>{{cite web |first=Natt |last=Garun |title=Facebook's new Snooze button can mute annoying friends for 30 days |url=https://www.theverge.com/2017/12/15/16780710/facebook-snooze-button-temporarily-mute-friends |website=[[The Verge]] |publisher=[[Vox Media]] |date=December 15, 2017 |access-date=December 15, 2017}}</ref>
=== "Did You Know?" social questionnaires ===
In response to decreased use of status updates on Facebook, the company began enabling "Did You Know?" social questionnaires in December 2017. The feature, which asks users to answer questions that are then shared as a status update, includes such questions as "The superpower I want most is...", "The first thing I’d do after winning the lottery is...", and "A guilty pleasure that I’m willing to admit to is..."<ref>{{cite web |first=Lucas |last=Matney |title=As tbh popularity wanes, Facebook launches ‘Did You Know’ social questionnaire |url=https://techcrunch.com/2017/12/05/as-tbh-popularity-wanes-facebook-launches-did-you-know-social-questionnaire/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=December 5, 2017 |access-date=December 15, 2017}}</ref><ref>{{cite web |first=Mariella |last=Moon |title=Facebook is asking random questions to learn more about you |url=https://www.engadget.com/2017/12/06/facebook-did-you-know-feature/ |website=[[Engadget]] |publisher=[[Oath Inc.]] |date=December 6, 2017 |access-date=December 15, 2017}}</ref>
=== Sound Collection music archive ===
In December 2017, Facebook announced "Sound Collection"; an archive of copyright- and payment-free soundtracks and audio effects its users can use in their videos.<ref>{{cite web |first1=Sarah |last1=Perez |first2=Josh |last2=Constine |title=Facebook Sound Collection lets you add no-name music to videos |url=https://techcrunch.com/2017/12/08/facebook-sound-collection/ |website=[[TechCrunch]] |publisher=[[Oath Inc.]] |date=December 8, 2017 |access-date=December 15, 2017}}</ref><ref>{{cite web |first=Timothy J. |last=Seppala |title=Facebook adds a sound and music library you can use for video |url=https://www.engadget.com/2017/12/08/facebook-video-tools/ |website=[[Engadget]] |publisher=[[Oath Inc.]] |date=December 8, 2017 |access-date=December 15, 2017}}</ref>
=== Off-Facebook Activity ===
In an August 20 blogpost, Facebook's Chief Privacy Officer Erin Egan, and Director of Product Management David Baser, announced "Off-Facebook Activity", to be released in Ireland, South Korea, and Spain, before being rolled out globally.<ref>{{Cite news|url=https://newsroom.fb.com/news/2019/08/off-facebook-activity/|title=Now You Can See and Control the Data That Apps and Websites Share With Facebook {{!}} Facebook Newsroom|access-date=2019-09-19|language=en}}</ref> Egan and Baser outline that with the feature, "you can:
* See a summary of the information other apps and websites have sent Facebook through our online business tools, like Facebook Pixel or Facebook Login
* Disconnect this information from your account if you want to; and
* Choose to disconnect future off-Facebook activity from your account. You can do this for all of your off-Facebook activity, or just for specific apps and websites."
A second blogpost on Facebook's Engineering website says that, while users will be able to "Choose to disconnect future off-Facebook activity" from their accounts, there will be a 48-hour window in which data from other websites will remain linked to the account."<ref>{{Cite web|url=https://engineering.fb.com/data-infrastructure/off-facebook-activity/|title=Redesigning our systems for Off-Facebook Activity|date=2019-08-20|website=Facebook Engineering|language=en-US|access-date=2019-09-19}}</ref> During the 48-hour window when incoming off-Facebook data is still linked to your account, "it may be used for measurement purposes and to make improvements to our ads systems".<ref>{{Cite web|url=https://www.facebook.com/help/2207256696182627/?ref=ofa|title=What is off-Facebook activity? {{!}} Facebook Help Center |publisher=Facebook|access-date=2019-09-19}}</ref>
== Security ==
On May 12, 2011, Facebook announced that it is launching several new security features designed to protect users from [[malware]] and from getting their accounts hijacked.<ref name="elinor">{{cite web | url=http://www.cnet.com/news/facebook-adds-new-user-security-features/ | title=Facebook adds new user security features | publisher=[[CBS News]] | date=May 12, 2011 | access-date=March 16, 2015 | author=Mills, Elinor}}</ref>
Facebook will display warnings when users are about to be duped by clickjacking and cross-site scripting attacks in which they think they are following a link to an interesting news story or taking action to see a video and instead end up spamming their friends.<ref name=elinor/>
Facebook also offers [[two-factor authentication]] called "login approvals", which, if turned on, will require users to enter a code whenever they log into the site from a new or unrecognized device. The code is sent via text message to the user's mobile phone.<ref name=elinor/>
Facebook is partnering with the free [[WOT Services|Web of Trust]] safe surfing service to give Facebook users more information about the sites they are linking to from the social network. When a user clicks on a potentially malicious link, a warning box will appear that gives more information about why the site might be dangerous. The user can either ignore the warning or go back to the previous page.<ref name=elinor/>
== Removed features ==
=== Email ===
In February 2010, ''[[TechCrunch]]'' reported that Facebook was working to rewrite its messaging service to turn it into a "fully featured webmail product", dubbed "Project Titan".<ref>{{cite web |first=Michael |last=Arrington |author-link=Michael Arrington |title=Facebook's Project Titan: A Full Featured Webmail Product |url=https://techcrunch.com/2010/02/05/facebooks-project-titan-a-full-featured-webmail-product/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=February 5, 2010 |access-date=June 4, 2017}}</ref> The feature, unofficially dubbed a "[[Gmail]] killer" internally, was launched on November 15, 2010,<ref>{{cite web |first=Jason |last=Kincaid |title=Facebook's Gmail Killer, Project Titan, Is Coming On Monday |url=https://techcrunch.com/2010/11/11/facebook-gmail-titan/ |website=[[TechCrunch]] |publisher=[[AOL]] |date=November 11, 2010 |access-date=June 4, 2017}}</ref> and allowed users to directly communicate with each other via Facebook using several different methods. Users could create their own "username@facebook.com" [[email address]] to communicate, use text messaging, or through the Facebook website or mobile app's instant messaging chat. All messages were contained within single [[Conversation threading|threads]] in a unified inbox.<ref>{{cite web |first1=Adam |last1=Gabbatt |first2=Charles |last2=Arthur |title=Facebook mail: it might kill Gmail, but 'it's not email' |url=https://www.theguardian.com/technology/2010/nov/15/facebook-mail-gmail-killer-email |website=[[The Guardian]] |publisher=[[Guardian Media Group]] |date=November 15, 2010 |access-date=March 23, 2017}}</ref> The email service was terminated in February 2014 because of low uptake.<ref>{{cite web |first=Ellis |last=Hamburger |title=Facebook retires its troubled @facebook.com email service |url=https://www.theverge.com/2014/2/24/5443454/facebook-retires-its-email-service |website=[[The Verge]] |publisher=[[Vox Media]] |date=February 24, 2014 |access-date=June 4, 2017}}</ref><ref>{{cite web |first=Ken |last=Yeung |title=Facebook ends its @facebook.com email address service, citing low usage by users |url=https://thenextweb.com/facebook/2014/02/24/facebook-ends-facebook-com-email-address-service-citing-low-usage-users/ |website=The Next Web |date=February 24, 2014 |access-date=June 4, 2017}}</ref>
=== FBML ===
Facebook Markup Language (FBML) was considered to be Facebook's own version of [[HTML]]. While many of the tags of HTML can be used in FBML, there were also important tags that could not be used such as HTML, HEAD, and BODY. Also, [[JavaScript]] could not be used with FBML.
According to the Facebook Markup Language (FBML) Developer's page, FBML is now deprecated. No new features will be added to FBML and developers are recommended to develop new applications utilizing HTML, JavaScript and CSS. FBML support ended January 1, 2012, and FBML was no longer functioning as of June 1, 2012.
=== Lite ===
In August 2009, Facebook announced the rollout of a "lite" version of the site, optimized for users on slower or intermittent Internet connections. Facebook Lite offered fewer services, excluded most third-party applications and required less [[bandwidth (computing)|bandwidth]].<ref name="BBCLite">{{ cite news | title = Facebook slims down to Facebook Lite | url = http://news.bbc.co.uk/1/hi/technology/8249835.stm | date = September 11, 2009 | publisher = BBC | access-date = September 12, 2009 }}</ref> A beta version of the slimmed-down interface was released first to invited testers<ref>{{cite web|first=Ben |last=Parr | url = http://mashable.com/2009/08/12/facebook-lite-screenshots/ | title = Facebook Lite: The Early Details and Screenshots | publisher = Mashable.com | date = 2009-08-12 | access-date = 2010-03-23 }}</ref> before a broader rollout across users in the United States, Canada, and India.<ref name="BBCLite"/> It was announced on April 20, 2010, that support for the "lite" service had ended and that users would be redirected back to the normal, full content, Facebook website. The service was operational for only eight months.
In June 2015, this feature was reintroduced as an app with a total size of less than 1MB, primarily focusing markets where internet access is slow or limited.<ref>{{cite web|url=https://newsroom.fb.com/company-info/|title=Company Info – Facebook Newsroom|access-date=26 April 2019}}</ref>
=== Deals ===
Facebook announced a pilot program called ''Deals'', which offered online coupons and discounts from local businesses, at an event at its Palo Alto office on 3 November 2010.<ref>{{cite web|url=https://techcrunch.com/2010/11/03/facebook-deals/|title=The Other Location Shoe Drops: Facebook Deals. Will It Discount Rivals?|first=MG|last=Siegler|date=3 November 2010|work=TechCrunch|access-date=7 October 2019}}</ref>
Deals launched on April 25, 2011, in five cities—[[Atlanta]], [[Austin]], [[Dallas]], [[San Diego]], and [[San Francisco]]—with the hope of expanding. This new offering was a direct competitor to other social commerce sites such as [[LivingSocial]] and [[Groupon]] for online coupons and [[one deal a day|deals-of-the-day]]. Facebook users were able to use [[Facebook Credits]] to purchase vouchers that could be redeemed for real goods and services.<ref>{{ cite news | first = Miguel | last = Helft | title = Facebook Is Latest Rival to Groupon and LivingSocial | date = April 25, 2011 | work = [[The New York Times]] | url = http://bits.blogs.nytimes.com/2011/04/25/facebook-is-latest-rival-to-groupon-livingsocial-facebook/ | access-date = 2011-04-26 }}</ref><ref>{{ cite news | first = Tom | last = Cheredar | title = Facebook launches Deals against Groupon and LivingSocial in five major cities | date = April 25, 2011 | url = https://venturebeat.com/2011/04/25/facebook-launches-deals/ | work = VentureBeat | access-date = 2011-04-26 }}</ref>
Deals expanded to Charlotte, St. Louis and Minneapolis in late June 2011.<ref>{{cite web|url=https://mashable.com/2011/06/29/facebook-deals-charlotte-st-louis-minneapolis/?europe=true|title=Facebook Deals Expands to 3 More Cities|first=Lauren|last=Indvik|work=Mashable|date=29 June 2011|access-date=7 October 2019}}</ref>
Facebook closed the Deals program on 26 August 2011, describing the product as a "test."<ref>{{cite web|title=Facebook ending Deals product after four-month test|first=Alistair|last=Barr|work=Reuters|date=26 August 2011|access-date=7 October 2019|url=https://www.reuters.com/article/us-facebook-deals/facebook-ending-deals-product-after-four-month-test-idUSTRE77P6Q820110826}}</ref>
== References ==
{{reflist|30em}}
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