Originally Posted by bickle
You pointed out the exact reason why those user moderation systems are awful. In the vast majority of cases, posts are modded down when someone posts an opposing viewpoint, regardless of how well reasoned it may be. A moderation system should be used to discourage trolling/offensive/off topic posts, not to discourage conversation.
I agree with this point; it's a double edged sword to use. For example, if anyone in this thread was railing against Red Dead Redemption (for valid reasons), that person will most likely be rated down against because of the massive amounts of fanboys who like the game. Look at the number of posts bashing Shipwreck for *GASP*, not liking a mainstream game.
But at the same time, if someone is obviously trolling, this system would help downvote people like those out of existence. However, I feel if trolls are getting out of hand, it's better to simply report the post and let the mods take care of it.