Calling all app developers: Amazon just launched a new tool that you'll no doubt want to take a peek at. The company's Web Services (AWS) division has just introduced Amazon Simple Notification Service (Amazon SNS) with Mobile Push, which is described as a "fully managed, cross-platform push notification service in the cloud." The real kicker, of course, is this nugget: "With one simple API, application developers can easily send notifications to Apple iOS, Google Android and Kindle Fire devices." Amazon's allowing all AWS customers to use the service for free so long a
