Tank
Overkill Specialist
and for today's feel good story 
http://news.bigdownload.com/2011/04/12/garrys-mod-error-helps-flush-out-pirates/


Earlier today message board posts from players of the popular sandbox game Garry's Mod started popping up. The users said they were unable to play the game, stating that an error message told them that the game was "unable to shade polygon normals." It also put up a number at the end of the error message.
As it turned out, that was no ordinary error message. Garry's Mod creator Garry Newman put the error message in the game to find out who was pirating the title. And that number at the end? It's the user's Steam ID number. As Newman wrote on his Twitter page, "Having fun watching people complain." Those who saw the error and posted it up for all to see found that their access to the game was banned
http://news.bigdownload.com/2011/04/12/garrys-mod-error-helps-flush-out-pirates/