Facebook,Myspace, etc are all gay. They are for losers who can't get dates in real life. So they try to meet up with a bunch of other tools just like themselves on the internet.
98% of my friends on Myspace I know in real life. It's actually a good, effective way of keeping in contact with people you don't normally talk to.
Say, for instance, you meet this girl at a party, you two hit it off.. give each other your numbers, etc. The next day you find her on myspace. I'd rather send her a message over myspace than call her because I barely know her. That's actually how me and my ex girlfriend hooked up. We met at a party and started talking on myspace.