We've always tried to find ways to help members make a quick distinction between the people they SHOULD listen to and the people they probably SHOULDN'T in the forums. Our first real attempt at this was creating the Wiseman group. Only knowledgable/helpful members are chosen to join this group. Our most recent attempt is the implementation of a user reputation system. We are hoping this system gives the users a way to reward other members who have posted helpful/accurate information in our forums.

Here's more on how the system works:
http://www.dsmtuners.com/forums/faq.php?faq=vb_board_usage#faq_faq_reputation