Least they gave you the copyright.I have seen my images on sites and hotlinked to my website, so I go in and edit the image and plaster my name all over it. Or you can be real nasty if they are using your linked image and change it to some really disgusting sight.heheee. Just look up this site in a whois data base to find the email or contact info which I did and it is so in messed up language it's hard to find a email, You could always run your mouse over the stie to see if you can see a mailto in your status bar.

"The happiness of a man in this life does not consist in the absence but in the mastery of his passions."