I don't want it to make anything like have the post bold or anything. I Just wanted a much simple hack of this:
User Rating. Where you don't have to put in a reason or anything, just select the rating. And its not like it shows anything, it just displays the rating in the users profile as their average rating, and their postbit as their average.
And for the queries, it would just have to run a single querie each time someone tries to rate a thread to see if they already rated it or not. Is that so bad?