I was getting prank phone calls constantly on my new cell phone and it was eating up my minutes!  So I asked a friend how to do a reverse cell search and they steered me to the web where I was able to punch in the number that kept calling.  Then I filed a police report for telephone harassment.  This was helpful information because when the police asked me if I knew who it was, I told them I didn’t, but I knew who owns the cell phone that was calling.  They used that information to find out that it was a teenager who was actually looking for my daughter’s cell.