A lot of the controls @codinghorror mentions actually seem to work. I'll post an update in a few weeks. Unlike many of the forums I've worked with in the past, phpBB, vB, Vanilla etc, there's plenty of incentive for people to engage in 'likes', 'flags' and there actually be some kind of effect (feedback loop). There's not really a reward for such actions on many of these well established forums. I'd like to see the 'trust/scoring' mechanism advance.
Moderating super-active forums is a pain in the rear. Some of the self-moderation levers built into discourse will go a long way.
@codinghorror I can feel bits of the stackoverflow point system growing in here? I'm a fan.