Kevin Rohling mentions that Visifire is being used in IMPULSE, the Microsoft new CloudApp() contest winning App. You can check it out at http://www.myimpulselive.com/. IMPULSE is an application for outdoorsy people that like to run, bike, hike, etc. and want to use a GPS device to keep track of stats like Average Speed, Total Distance, and Fastest Mile. He has blogged on why he chose Visifire for his App here.
Its great to get insights on Visifire from an authority like Kevin. Thanks for the mention Kevin.