You could win $25,000 for your Android App

Use PayPal to integrate secure payments into your Android app and you could win $25,000, or $15,000, or $10,000. In fact, there are no losers in this contest. There are people that donít win money, but really, whatís the worst thing that can happen? You end up with payments in your Android app?
Prizes

Grand Prize is $25,000
2nd prize is $15,000, not too shabby
And 3rd prize is $10,000, which is not to be sneezed at

In addition to the cold hard PayPal account deposit, the top 3 applications will receive marketing and PR support from PayPal to help build awareness of their application.
Requirements

Weíre looking for something new, something surprising, something with business potential, something that integrates PayPal payments.

Link: https://www.x.com/community/ppx/devchallenge