No more meat. Not more sweets. Seriously.

You know that the adoption of participatory/community (yeah web 2.0) sites has reached the masses when people gives up Facebook for lent. It may sound crazy but is happening as covered in today’s Wall Street Journal.

"If I give up clams, which I hate, I'm not really doing anything," says Kevin Shine, a 39-year-old electrical contractor from Philadelphia. But abstain from posting "status updates" on his every move? That's a worthy struggle. "It's my candy," he explains, noting that he logs on as much as 20 times a day. "That's pathological."

And what can help us to understand this a bit better? Maybe what are does sites used for according to eMarketer will help.