I totally agree that jiu jitsu does have it's place in certain situations on the street. Having trained in jiu jitsu (and chin na), I found myself using various techniques successfully as a bouncer. I just get so tired of hearing about bjj this and bjj that. I can't argue with the fact that slamming an opponent on to concrete is going to cause some serious damage, but I will say that going to the ground is a bad idea on the street. Sure it can happen and it does pay off knowing how to handle yourself on the ground, but in most situations you don't want to spend time working a submission (or a break) because there is a good possibility you'll get attacked by your opponent's buddy.
-Life is a mad dance, cursed by horrifying moments of sanity. -Edgar Allen Poe