After seeing some of the high school levels of drama, I try not to take CT too seriously. It always strikes me as funny when users have photo albums of "downraters", like they're trying to shame someone who may have been completely honest in their assessment.
What's the point of having a rating system if you're pressured into always rating 10s? At this rate, it might as well just be a thumbs-up/down system like in Stashes.
I've been thinking about how this problem might be fixed, and after a few flawed ideas, the only thing I can come up with is if the ratings are all anonymous, and there's no Tab message saying that someone "just checked you out". I guess it just boils down to which is the higher priority: getting honest ratings, or meeting new people.
I believe that CT is more about the social aspect, so my vote is to do away with the ratings, and have a single thumbs-up or "I like it" button, similar to collegehumor.com