Good news for any member of a developer user group who’s interested in winning a $100 for his/her user group. Here’s the deal: Telerik in partnership with PreEmptive Solutions and Microsoft will donate a $100 to your user group for each eligible app published at the Windows Phone 7 Marketplace. The app needs to use Telerik RadControls for Windows Phone 7 and PreEmptive Solutions Runtime Intelligence for Windows Phone. You get both Telerik RadControls and PreEmptive Solution at no cost. What’s even better is that if you get Telerik RadControls for WP7 now, you will automatically receive the updated version of the suite in July including Chart and Calendar components leveraging some of the functionalities made available with the latest Mango release. The deadline for submission is extended till June 9. Read full details here.