Facebook is a tool. It's especially good for a business. Personal use however could be a different story.

Even avid fans admit to intermittent misgivings about living so much of their lives in public. In May, almost 6 million users in the U.S. deactivated their accounts. When the Pew Internet & American Life Project surveyed 895 technology experts recently, almost all of them — while celebrating the benefits — acknowledged significant costs to social networking.