What's the best way of tracking down someone using their cel phone number?
 

Hi All,

Details of why I need to find someone are in this thread:

http://forums.pelicanparts.com/porsche-911-technical-forum/395283-anybody-know-bruce-sherman-aka-bruce-deacon-parts-seller-la-area.html

I've tried Intellius and all that I could get was his last name, that he uses Verizon, and that he lives in "San Bernardino" somewhere. Anyone know of a better phone investigation service?