Endomondo GPS tracking

Anyone who is interested in tracking their walk/run stats without paying for a GPS watch for $150 can use this crafty little app on your smart phone. Its awesome, just used it today and it gives stats that I have been wanting and its a free app!
here is the website
http://www.endomondo.com/home
It uses gps tracking from your phone so asl ogn as you have GPS your good to go. All data transfers to the website also.