Shaddows - 8:34 am on Sep 18, 2012 (gmt 0)
Sanity is not statistical.
In the technical forums, there a few members who are the undoubted experts. If you can't spot them, well, tough.
In the more opinion-based forums membership and contribution is, to some extent, a function of the prevailing sentiment. Most people are vastly more likely to frequent a community that is in harmony with their own views. Dissenting opinion is therefore a rare and valuable commodity, and if you discourage such contributions by devaluing it relative to the "clique" you will end up crushing the pluralism that is essential to any vibrant community.