In app billing

We heard a lot of news at today's event at Google, and one thing many have been waiting for is in-app purchases.  These will allow for things like buying songs, upgrading to premium versions of apps, add extra levels or content, and provide a way to use virtual currency.

Disney Mobile showed off several things today, including in-app purchasing to buy a song for their upcoming Tap Tap Revenge for Android application, and it looks to be integrated really well and should provide a seamless way for end users to enhance their applications, as well as provide developers with a way to generate more income.  We all know that happy, well fed developers make for a robust Marketplace and happy users, so we can't wait to see it!