Steam

A digital download system based on auto-updates, friends-lists, and no DRM. Although not perfect it's a much better option then Gamestop and dealing with the asshole customers rip off resales, cheap ass trade in values that rip you off at every possible opportunity. Steam was created by valve to sell there products along with indie products and occasionally other stuff. Many people claim that Steam is only around to line valves pockets but really they are just upset by the bugs and mistakes valve made with the program rather then having really issues with it. Despite it's wonderful usage and application Steam has it's fair share of faults. Mainly slow processing which can delay downloads massively, auto-updates without any notification, and the occasional bugs and glitches. Despite this Steam is often regarded as a massively useful program and a god send because of it's lack of pointless DRM which most other digital download services are plagued with. It also has often sales which can give a great product away at a great price.