Amazon has announced a new kind of virtual currency this morning, called Amazon Coins, which will be exclusive to the company's Kindle Fire devices. The new currency will let customers shop in the Amazon Appstore, and make in-app purchases for their favorite Kindle Fire games. So now Kindle Fire owners will be able to use their real money to buy virtual money, and then use that virtual money to buy other virtual forms of game-specific currency. Convoluted? Perhaps, but Amazon Coins is the latest in line of exciting new features the company is pushing towards for its mobile department, including Game Circle, a Game Center-like service with Global Leaderboards and Achievements.