Mobile add-on challenge is back. This time again the top ten winners can choose to have a Nokia N900 as one of the prizes. Develop and submit a Firefox mobile add-on by Monday, April 12, 2010. Your mobile add-on must be compatible with the latest version of Firefox mobile and be compliant with our mobile UI style guide.

Any and all innovations that support a positive mobile user experience are welcomed. The top 10 most compatible add-ons that show innovation by considering the mobile context, as well as a great user experience, will be selected as winners by our judges.