There's been near 700 pedophiles that have been nabbed from MySpace. This includes past offenders as well as those just getting busted for the first time. I for one, refuse to open an account there and with facebook.
All it takes is the accusation (not even a conviction) to destroy a career. As long as I don't enter that environment, I can prevent that type of accusation.
Even here in the chat room, I won't be 'alone' with a known minor female.....