We are currently trying out the vBulletin reputation system, which is intended to provide newcomers some guidance on which posters are more likely to give accurate and helpful information when they do not always agree on the answer. vBulletin also has a rating system for discussion threads to provide a visual indication of which threads are particularly good and which are not so good. The thread rating is about the entire discussion, not any particular post in the discussion. At the top of each thread display is drop-down window labeled Rate This Thread. You can pick one of 5 ratings from Excellent to Terrible. Once 20 votes have been cast on any given thread the reputation is displayed in the forum thread listing. The minimum number of votes is a parameter and I will change it to 5 temporarily so that users can experiment with the system. It will be changed back to 20 in a few days.