There are real people on online games too.
Furthermore, I acknowledge cyber bullying can be quite real. Although what we're discussing, is nothing of the sort. When people post anonymously, there is no bullying involved, because no ones reputation is at stake. There is no peer pressure, or any means of coercion, forcing people to sit there take something they can't stand. There is just two people battling it out in a virtual world. The consequences are only as real as the mind perceives them.