I'm not even kidding. This is how cocaine dealers secure new clientele. Offer potential customers a free sample of their wares to get them good and addicted, and then suck down all of their money to provide them with their daily fix. Granted, it's evil, but it's also pure genius from a business standpoint. Blizzard gets to effectively push their digital drug while securing a batch of users to provide them with lifeblood for the future.
via Joystiq