There is a similar thing called Nike Plus. It's a community web site with a database of the running data of runners/joggers using Nike+ sensors in their shoes (

There is a similar thing called Nike Plus. It's a community web site with a database of the running data of runners/joggers using Nike+ sensors in their shoes (or Nike+ GPS App for iPhone). And yes, I find it funny to be able to compare my running times, pace, total running distance, etc. to the people around the world, it's like a RPG game doing real things.... Of course, there are drawbacks. For instance, if the sensor isn't properly calibrated the results can be inaccurate. Not the case with the pure GPS tracking app, of course...