Good Old Games, otherwise known as gog.com, is a service that sells older video games by download at a considerable discount. They’re the good guys, fighting to keep great games from aging past their glory days as computer technology marches on. They’re also waging battle against the copyright cartels and the scourge of Digital Rights Management, or DRM. DRM is what stops you from playing the games you bought, with your own money, when the Playstation Network goes down. DRM is why you couldn’t play Portal 2 when you bought it on launch. Gamespot has the story.