Facebook represents a perfect storm of fraud factors. The whole "friend" system creates trust, but the reality of social networks prevents verification that people are who they say they are.
.... difficult-to-detect fraud is exploding on Facebook, and you would be well-advised to verify every friend.
His research included fraudulent friends for his own account.
The author also mentions hate speech, which seems to be unrelated FUD at first glance. What you have to remember is that employers check Facebook and MySpace too. Can you be sure you have not been libled in a private profile? I've stayed away from Facebook because I never trusted the owners and despised the fake privacy they offered. Until employers understand that the information can be misleading, you would be better off away from the service too."