EDIT 13/03/2012 : The site owner looks to have removed all the backgrounds they were selling which is great news for all the stock providers!!
Please check the following website for stolen renders and stock photography. There seems to be a lot that looks familiar![link]
Thanks to ~CorVas
for the heads up.
This site is run from Shanghai, however is powered by zencart and has a clear contact us form for you to send any DMCA's
Theres also an email address...
cnyutao at gmail dot com