I don't, for the most part. There is someone out there giving many threads a one star review. If I don't like a thread I just ignore it, or don't even read it if I do not like the subject line. Whoever is doing that is childish in my opinion. The system is flawed because a jerk can come by an give you one star on all your threads just because he does not like you. I would prefer if the rating system were public and we could see who voted for each thread.