A reputation system promotes group think and surrender. If anyone visited any social bookmarking website, they would know that dissenting opinions are usually sent to the bowels of hell. I garauntee if this forum had a upvote/downvote system, it would be the same thing. A bunch of like minded posts being at the top with the voice of opposition in the graveyard. In a way, I completely agree with litechick but being chaotic evil is awesome.