Veylon, I'd give you that point, but it is not isolated to instances of needing to write quickly. This sort of garbage spills over into people's names (such as finding that Dwarven Paladin with the epic name, "pwnsunub"), into chat channels in non-combat zones, and, God help us all, into email.
I'm sorry, but there is no way to convey to the world that you have a functional grasp of the
english language when that stuff spills over into . . . well, anything.
Edit: I'd like to cite exhibit A [http://www.vgcats.com/comics/?strip_id=155].