No Shirt, No Mosh.
Baby steps to a better world my friends. The next time you're at an awesome show, tap that shirtless piece of man meat on the shoulder and inform him that everyone is already sweaty enough, and there's no need to spread more sweat and ringworm around. Whether muscular, skinny, fat, or average - we'd all get along better if walking by you or getting squashed next to you didn't seem like spending a day at the zoo arm and flipper with a seal.
Now you know, and knowing is half the battle.
this would matter a lot more to me if I wasn't old and therefore now stand off to the side with all the other old people where young sweaty enthusiastic upstarts can't jostle our old bones.