Microsoft drew embarrassment this weekend when it revealed that the winner of its app development contest was an iPhone app. Although 14 out of the 15 young companies at the Startup Weekend event wrote for a Microsoft platform, it was an iPhone contact memorization app, Learn That Name, which won the most votes from those at the competition. The victory came despite having just 48 hours to build and test the app and should lead to a $3 download when it reaches the App Store.