Also the moderation is often hidden. Last week I ran into one of my answers for a language I haven't used in a while. When I read the answer I thought it was odd because the english was very poor. Then I checked and found that a moderator had made a really poor edit of the original answer. Maybe this is reasonable on a site like SO but I really felt that somebody had essentially impersonated me and entirely changed the tone of some writing which was attributed to my name.