This is not a perfect solution for every situation but I can recall quite a few times when such a service would have been handy. Jerry let me know about a new website at:
The site does one thing and it does it well. You just type in your phone number and it will call your phone. Hopefully you don’t have it on silent or vibrate only and you will find you phone. When I was a college student without a house line I really could have used a website like this to find my phone.
I am not saying it is the ultimate solution but for certain situations it is perfect… Let us know if you use it!