Going outside. It's quite dangerous. Just ask a World of Warcraft player. Gang fights, turf disputes, trade swindling, imposing authorities, Mr. T. – and we're not even talking about WoW yet.
So imagine what happens when you mix those things, rampant drug and alcohol usage, internet anonymity, a cross between GTA-style violence and Harry Potter-style witchery, 13-year-olds, and good old FPS teabagging. You get a rather dangerous place called a "PvP Realm." Roughly translated for those who haven't yet mastered WoW-speak, it means "open season on your ass."