It certainly is not easy to chase these crooks but on the other hand they will continue to steal until someone at least slaps their hands.

Denise, I think it might be worthwhile to invest a little of your photography income on a consultation with an attorney who is experienced in copy right and intellectual property law. You might at least get an expertly written letter you could send to these offenders and you also might run across an attorney who would consider action on a contingency fee basis.