I like all the yelling and screaming. It makes the place alive. I don't like fans cursing though, that should not be tolerated. Sure, sometimes one slips out but for the fan who can't control the 4 letter words they should be shown the door.
We aren't going to the opera! Make some noise. The players know betting is going on and if they can't take a little noise they are in the wrong job. I'm sure that when they drop a ball they are more mad at themselves than the better is mad at them.