erku,
I agree that it is a suggestion to put all of your contact information in a site. I don't think it is a "requirement" though. I have helped numerous "newbies" this month and it runs about 50/50 with the actual address being anywhere on their site and phone numbers are even less. Just my observation there from the people I have communicated with here in the forums. If it was a requirement you would think that any site approved in the last month or so would have it.
I had big problems putting my physical address on my site for various reasons, one being we do get hate mail from time to time when we report some on certain stuff at my site. We got hate emails also before we were delisted of people bragging how they are taking us down. It is scary to think what some of these people would do if they were near me. i think a bigger problem is people using this forum without filling out an actual profile. If google made it so the "publishers" area was only for google news publishers there would be a lot less spam there. It would decrease the spam here also in the "quality" section. Years ago when we started in google news, this section had a lot of good discussions on quality. It still does but you have to wade through the people reporting, and I use that term loosely as it should be called bragging, about sites they think are spam. to me, there is no reason to report a site here in this forum. there is a submission form for that. You see some users here reporting the same site over and over again and in effect spamming the forum. Please don't think I am saying your post here is spam or inappropriate in any way. It is a valid question and deserves a valid answer.