I used to go to a lot of hardcore shows back in the day. The nastiest pit I ever dealt with was Bad Brains an City Gardens in Trenton. The crowd was frenzied. My 140 lb body was getting tossed around like a wet rag. 10 years go by and I was at some show, I forget the band, but now I'm the 200 lb. guy slamming into people. Big difference. I have no problem with slam dancing at shows as long as the music warrants it. Just don't slam dance at a Juliana Hatfield show. Ha! Also, I always thought it was weird when people would slam dance to a dj spinning punk rock or whatever. Something wrong about that.