Windows Phone 7 Accelerometer QuickApp (Using Silverlight for Windows Phone 7)

John Mulhausen walks you through building a very quick application that will take you from zero to seeing yourself travelling on a map in real-time in just 15 minutes.
The Location Service for Windows Phone 7 uses a combination of GPS, cell-tower data, and even Wi-Fi data to determine the phone's longitude, latitude, altitude, course, speed, and more.
Click here to download the source code for this app at the Silverlight for Windows Phone Code Gallery.