Google Play adds in-app subscription support for Android

Google Play (formerly Android Market) now supports in-app subscriptions, so developers can optionally accept recurring payments for their apps. Subscriptions can be monthly or annual, and ... are all auto-renewing by default. Good news, developers! You'll get at least one accidental payment from a user.

First out of the gate to support this is Glu Mobile, which appears to be using it for recurring conversions of money to in-game credits in games like Frontline Commando. There's even API functionality allowing developers to use in-app subscriptions to determine access to non-Android-based properties, like websites – allowing an Android app to serve as the subscription system.