Twitter 360, for the iPhone 3GS, is a new application that enables you to visualise your Twitter friends via an augmented reality view using the iPhone camera.
When you look through your iPhone camera with Twitter 360 you can view information windows superimposed on the screen showing the direction and distance away of your Twitter friends. Twitter 360 also shows arrows on the screen that, as you move around, uses the iPhone's in built compass to point you in the direction of a chosen Twitter friend.
Twitter 360 is one of the first iPhone applications to use the new Twitter’s Geotagging feature to geotag your tweets. The application includes a Google Map view, that geotags your Twitter friends and shows their location using their Twitter avatars.
Download from the iTunes Store