Should be the rule, every fight should be 5 rounds. Silva lost a 3 round fight tonight, and won in the last minutes of the 5th. just think how many fights could go in a drastically different direction with 5 rounds instead of 3. Think of a real fight, you let a wrestler and a jujitsu guy go at it (pause) for an unlimited amount of time. Wrester dominates for the majority of the time in terms of position, not doing any damage but tires himself out towards the end. Jujistu guy catches him in a sub, game over. Cut the time short, wrestler wins by, well lay n pray. (hypothetical of course) 15 minutes is just to damn short for a fight. Shit i wonder how MMA would differ if they took on boxing type rounds, with 8 to 12 three minute rounds. Would definitely keep the action more intense, fighters would be forced to be in better shape too.