Well, we don't want an overflowing of the fad threads (come on, you know that some of those cases were pretty extreme and stupid), but yeah, we just don't want massive trolling, flooding, spamming, and abuse of that nature. Essentially Unmod with the crap taken out. Also if someone acts really dense and posting to piss people off, they will get just as moderated, so as to keep the forum clean of that.
Also, I'm not sure where the whole no porn thing came from - even djp was like "no porn?" We'll probably be discussing this in the next few days (I'd lean more towards the end of the week though).