Lmao, valve should fix their filtering system before people catch wind of this shit.
I remember there was a dota tourney going on. Randoms could form teams and play in it. The leader board for the tourney was on the start screen, so everybody saw the brackets and teams. There was one particular team that had a name like "the retard niggers" or something like that. I would turn on dota to find this team on the main menu climbing higher and higher in the tourney. It took valve like a week to realize this and ban them.