The problems people carry on one website bought from another website for everyone else to deal with.
Person A: Arghhh, I hate the facebook crowd, that website annoys me, now show me your profile photo if I'll talk bad about you too.
Person B: Damn, you came from facebook to tell me to show me your picture, after not getting your way on facebook? You clearly got cyber-baggage from that website on you for us to deal with.