4. Having Conversations On Your Wall
I have a hard time grasping this one. Yes, Facebook is all about connecting/stalking your friends, but when you got that one comment from someone, then you respond, and then they respond, and then you respond and suddenly there is about 40 comments on one wall post - things get weird. Unless you're talking about something that is so damn awesome all 600+ friends will be interested, chat the person. Otherwise we're all eavesdropping on something that is not even interesting. Which segues into our next mistake...