The problem with mobs is they gang up on individuals and the problem with that is the mob can easily over power an individual.<p>If you take away the mob's power by only allowing points to go down to 0 or 1 for example instead of -4 it might feel less mob-ish..<p>EDIT: The end result of mob encouraged commenting is someone ends up with negative points for their comment(s).. Maybe only users who've reached certain karma level should have the ability to down vote below 1. Reduce the size of the mob?