Chill out. I'm just pointing it out to the OP. It kills tires, it's no wonder. It's still very cool trick though and I want to learn it too, that's why I'm riding a fixed gear, for tricks and fun.

And as it was said, the main thing is about common sense, whether you ride brakeless or not. It's very ballsy thing to ride brakeless though. I hope I'll be able to do it someday, just for fun.

And about snapping of the chain. I heard you can stop the bike by putting your gloved hand on a front tire. Does somebody stop it like this?