PayPal

PayPal is offering prizes of up to $25,000 to developers to come up with the best use of PayPal secure payments in an Android app. The PayPal X Developer Challenge runs until May 14, so there's plenty of time to get your ideas turned into code and uploaded to the Android Market. PayPal says its looking for "something new, something surprising, something with business potential, something that integrates PayPal payments."

First prize is $25,000, $15,000 for second and $10,000 for third, and all three will also receive marketing and PR support from PayPal to help generate interest in their apps. [PayPal]