in instances it is 3days bannable i think thats what that youtube dude got, Doing it out of instance is not bannable i think, 2 of my frinds did some amazing speedleveling in icecrown, were the lowbie was a prot paladin 77, aoe pulled alot of mobs, the other dude was i a druid out of the grupe he healed him and aoeed the mobs when the pala had tagged them, thay did 77-80 in about 4hrs