I actually like the feature, I'm getting some really nice feedback from people I've helped out in threads and I'm leaving some feedback to people who have helped me.
I'm pretty sure it's turned into a game for some as certain posters went "negative" really fast, and then oddly recovered really fast, obviously asking buddies to "help them out", but come time I'm sure that it could turn into a pretty good pointer about someones online behavior, though I doubt it's going to last very long.
Better would be to leave to judging up to Randy and his staff (timeouts cost you, TOS violations cost you etc...)