Hey,
I am just finishing up my script for sale, that do exactly what you need. You just put in a database in what sites you expect you gallery to appear. After that write for what url you will be searching, and the script goes and searches in which sites your url have appeared. It has many more extra features..Message me if you are interested , i can set you up very special deal..Hit me on ICQ 411661 or through the form at my website
http://www.kaktusancorp.com
Thanks!