I've been here, and been a major lurker, for a LONG time (long time is relative but still...) and I can tell you 2 things;
1) GBATemp doesn't condone direct piracy and doesn't allow it either. I would assume that leaking the title key (or posting one to any game) on GBATemp would result in at the very least a warning strike of some sort for said user.
2) GBATemp generally doesn't condone violence either, and robbing a gamestop while it may sound all funny haha 'got the game anyway who cares', is an extremely bad scenario all around. My local gamestop got robbed a few years ago and now the employee who was there is completely traumatized to even go near the store. It's not all fun and games in life.