@Watermelon Chris: The point of negative post rating is to let other people know the content of the post is wrong or inaccurate. It's mainly meant to be used for posts of technical nature, which is why we're looking to remove it from places like the Lounge and Help Wanted.
But how often do you get a post that is wrong or inaccurate? This isn't an answer+question site. People aren't just going to be at the first reply and fly off. How is the current reputation upped/downed btw?