I've been to a ton a forums like that. SomethingAwful was one of them that I got tied up in. They had a sub-forum there called FYAD (standing for 'fuck you and die') where it was basically a bunch of folks posting non-sequitors and maintaining a strange class structure where if you didn't 'get' all the weird random shit flying around you were ostracized. Man, that intrigued the hell out of me. I spent two years on and off integrating myself into it and becoming an accepted member but I kinda stopping going when it stopped being a game and I wasn't getting anything out of it.
Here at least I can get some intelligent conversation. I might get into a flame war too if one crops up. I think I'm getting a bit rusty