3. Public Arguments. Why the hell have some people decided that a public argument on Facebook is a good idea? If you put it all out there for the world to see, later, you can't deny saying it. That shit'll be with you for life; you'll be saying to your other half "I don't remember saying that, you must of misheard me" to which the other half will reply, "Well you posted it on my wall and 18 of your friends bloody 'liked' it, so I know you said it and I know you have been talking about me with your mates".
5. Spam. “People are saying horrible things about you on their twitter feed. Click this link to find out who.” To be honest even if that is true, ignorance is bliss so I'll give it a miss, and especially as clicking the link will undoubtedly get me a virus quicker than a pervert in Bangkok.