What are the codes you post on Facebook, Twitter, and InsiderX?
Occasionally we get extra codes for content on the Xbox LIVE Marketplace. It could be anything from a LIVE Gold subscription to an Arcade game to an add-on for a retail game. Usually we’ll mention what it is for. When we post a code, the first person to redeem the code on the LIVE Marketplace gets the content. Each code works only once, so it’s a quickest-draw race to get the content. When there are a lot of people racing to redeem the code, we like to make it exciting by removing characters from the code and replacing them with a # or ?. In the case of missing characters, the first person to correctly guess and redeem the complete code is the winner.