I dont know about you guys, but I think it would be damn tough job to ref an MMA fight there is so much to look for. It seems that it is so easy for fighters to slip stuff past the ref.
On the other hand though I don't think that most fighters are intentionally trying to break the rules...its a heat of the battle thing. Thats what happened to one of our fighters on this TUF season elimination round. Brandon Garner, he threw a knee when his opponent was on all fours and ended up disqualed. Brandon is a good dude and I know he wouldn't do it on purpose, but it happened.