Today, at the Atlanta Code Camp, I just announced the Windows Phone App Challenge of the day. During the event, between sessions, build a Windows Phone app around the theme of Summer, show it off at the end of the day, and win prizes! Some idea around the theme would be vacations, cookouts, camps, the beach, Independence Day, etc. The best 3 apps (by audience voting at the closing keynote) will win prizes, including a Windows Phone. Find me onsite for more information.