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The currency havens are disappearing as Switzerland and Japan intervene in foreign-exchange markets, while U.S. and European debt loads undermine credit ratings.

Federal Reserve Chairman Ben S. Bernanke had twin goals a year ago: stop falling prices and boost growth. His remedies worked so well on inflation that the bond market shows he may have limited options now that the economy is slowing again.

A Wal-Mart Stores Inc. worker said he was disciplined for using Facebook to rail against a boss’s “tyranny.” A crime reporter in Tucson, Arizona, was fired for using Twitter to taunt that the city had too few homicides.