Amazon Coins joins a few other virtual currency minting operations like Bitcoin, Second Life's Linden Dollar, Facebook Credits, Microsoft Points, and Nintendo Points. But some of those, while pinned to the US dollar, had bizarre exchange rates, leading to confusion. So Amazon kept it simple: one Amazon Coin is worth one penny. Developer payouts remain unchanged; devs earn 70 percent of the take, but new apps will need to be approved by April 25 to get in on the Amazon Coins flood.