I have, albeit on /g/ which is actually quasi-regulated. I'm still not convinced that people understand what they're doing. It doesn't make it right, but I don't think a lot of people grasp that what they're doing has a real impact on a real person with a real life on the other side of the screen. They think it's just a sick role-playing game, and they play the role, and they forget that it isn't just a game.