nfh...the only personal info you get plastered all over the internet is the info you provide. facebook can not find out anything about you that you don't tell it...there is no spyware in it that follows you around to other sites and sees what kind of person you are from other internet activity...the whole mess about personal information abuse was that it was going to be used as a statistics tool for marketing purposes

if you're uncomfortable with sharing some stuff then don't! facebook doesn't require any real information from you...the fact that you can open a fake account proves that facebook is not out there to get you and your personal information though, if it was that kinda site it would be much much harder to open a fake account.