It looks like facebook has been hit by 5 different scams in the past 7 days according to the bbc - http://news.bbc.co.uk/1/hi/technology/7918839.stm I'd avoid being active on there for the next little bit, just a heads up.
yeh, this happened with myspace back in the day and i think that was the start of their downfall, they didnt act quickly enough