Unfortunately, this guy is like a friggin ghost, and without a dc number or some proof that the cards were actually delivered to him, there is not much anyone can do as far as filing a police report. I have his information and am going to try and send a letter to his po box, and see if that draws any response. I'm also keeping an eye out for him on other sites as well.
This is one of the tougher ones. Without a warrant from a law enforcement agency, I cannot get his personal info from the post office.
We may have to chalk this one up as a learning experience, but I'll keep trying.
BSC