Nightmare Mode's Mike Barrett presents a handy field guide to the various types of players you'll encounter in Diablo 3:
"Every game has its share of irritating players that flaunt social graces. These are the guys parking the tank on Blood Gulch’s only rocket launcher in Halo or exclusively using knives in Call of Duty. Sure, they technically don’t break any rules, but that doesn’t mean they won’t be called out on their against-the-grain style.
So what do they look like in Diablo? Take a look at a few of our least favorite below. And try not to feel bad if you recognize yourself among the riff-raff. We all sin."