Someone brought up in another thread the idea of having a subforum where anything goes. In other words you could call people names and flame all you want. That could be incorporated into this idea.
I have seen that type of subforum elsewhere. You are not supposed to enter if you can't take the heat. I can't say I've ever seen what is actually said in them though, since I typically don't like that sort of thing.
I'm not sure if that sort of thing would work the way people think. Some say that it lets people blow off their aggression, but I suspect that the hard feelings it created would end up filtering into the rest of the forum and make it more negative.