On the other hand, I've seen lots of things said on Twitter (and other social networks) that I've just never seen people say in in-person interactions People w

On the other hand, I've seen lots of things said on Twitter (and other social networks) that I've just never seen people say in in-person interactions People will use any medium to express things they won't express in in-person interactions. I've seen things written on bathroom stall walls that I've never seen people say in in-person interactions. Is that a problem with bathroom walls? It's not the medium that's the problem. If there is indeed a problem then it's a matter of reach and not the medium.