With CCBill and Epoch you send support proof that you contacted those sites with notices and they didn't respond. Also send over a scan (black out what is needed) that proves you own it. Now just showing proof may get something done from them, I guess it would depend on what is stolen or maybe how much, some factor at least.
"THEN" they will do something about it. Otherwise it's people "thinking" the content is stolen with no proof.
I'm not trying to back the sites in question, but if they respond to take down requests, or if nobody is complaining... I don't think they are going to do anything about them based on the theories of Webmasters.
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