Art Theft on Adult Paysite

[bagheera.livejournal.com]

As posted on my FA journal, I received a message on FA from another user who said they found my art on a certain newly-popped up adult paysite. I Googled the page and it looks like the site has pretty much stolen the entire FA.

http://sites.adult-empire.com/7095/

So, what should we do about it? :)