I think it's generally a bad idea to make very direct statements like "You are an idiot!" You could say "your reasoning is idiotic" and you'd prob. be okay . You got busted on that thread because you were using rude language for absolutely no reason. It's easy to forget that not everyone has your sense of humor. Some people who post on SDN are brand new to the game, and are honestly looking for answers. Then, someone comes along like you and they're like "What the hell was that? I'm not coming back." Generally, I think it's okay to joke around only with people who've been here a while.