So you've lost your phone. Nobodys around, and you don't have a fancy iphone where you can simply go online and push the magic button that finds it. Dont just turn to facebook and hope you can chat a friend to call your phone. Go to icantfindmyphone. Its a free service to find your lost phone without any ads!
Dave Dawson created this site in 6 hours. His story about what happened when he created this site is quite amusing. Go read his article about his craziest internet day ever.