The spammers have been working hard to infiltrate Facebook. I just got this (below) today, and it tripped my mental spam alarm. These sorts of messages were commonplace on Friendster. I would get messages from girls with near-pornographic profile pictures wanting to chat or asking me inane questions like which was the better hair color. This is more insidious.
And for the record, I went to USC 2 ½ years ago.