Microsoft has released a new app into Marketplace.
Dotastic uses social pressure as a way to compel task competition.
Using the app you earn points for completing tasks and compete with your friends to be at the top of the leaderboard.
The incentives and social pressure are intended to help you stay motivated as you complete your tasks and share your achievements with others.
The app is accompanied by a web page which has not gone live yet.
Based on the screen shot it is likely cross platform, but for once Microsoft has released the app on Windows Phone 7 first, for which it should be congratulated.
Dotastic can be found in Marketplace here.