I think the problem with this is that some people generate more responses than others. The opposing side will likely give low scores to the person posting even if the discussion is rather interesting. Can you imagine Syamsu giving me a high rating for any post in any thread no matter what I say? Or Stephen? What I had in mind still leaves the decision up to the Admins i.e. who goes from debating newbie to old pro with the priveleges and responsibilities that moving up incurs...screw up once you get those privileges you get kicked back down by the Admins. The rating system by members might be a nice way of indicating to the Admins that a problem is arising.
Hey Dan, your last post was really short..I give it a 2