http://mmajunkie.com/news/15729/abc...ine-clears-up-back-of-the-head-definition.mma As far as I can tell, this means that the Serra punch on GSP is now legal. You can hit someone as long as you're partially touching the ear. While I agree that knee strikes and stomps to an opponent who's head is pinned to the ground is bad, I don't think kicks and knees to a crouching opponent, or someone up against the fence (for example, Cerrone vs. Varner) should be banned. Randy Couture taking a three-point stance to avoid knees and kicks to the head demonstrates the stupidity of that rule.
