Another user of this forum has very kindly put together a DMCA info page here:
http://flemishdreams.com/index.php/dmcaThe DMCA needs to be sent to the hosting company etc. not the website owner. A lot of the Warez sites have a page saying they care about copyright etc. as a smoke screen and say they have a DMCA form to fill out, procedure to follow and so on but in reality you will get no joy by using these methods.
If the site has ads on the page where your work appears there is usually an automated way of letting the company providing the Ads know. I have found Google, for example to be very responsive. The way it works is that the Ads get suspended for a day or two, the thief takes the work down and then the Ads get reinstated because they have corrected the problem. This sucks because the Ads get reinstated, but the thief has lost a couple of days of Ad income. There is actually an advantage to us in the huge volume of stuff these people seem to steal, it only takes a few artists to complain, get the Ads stopped for a day or two each, and get their work removed, to make the collections look like Swiss cheese and put a big hole in the income generated too, till it's no longer worth the hassle of the thieves to maintain the sites respond to the notices etc.
Here's an example for Google.
There are two things you should do, the first part isn't a DMCA, it's letting Google know that the site violates the terms of AdSense by systematically violating copyrights and stealing IP:
1.
Where you see a Google Ad there will be a tiny blue arrow with an "i" on it that says "AdChoices" when you hover over it. Click that.
On the page that pops open click the drop down list under "Report a policy violation regarding the site or ads you just saw" choose "the issues are with the website"
Tick "The site violates AdSense program policies in other ways."
The write out something to the effect that it is a site distributing people's Intellectual property in violation of copyright. Here's where this is explained:
https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=1059592. This is the DMCA bit:
As above but instead of Ticking "The site violates AdSense program policies in other ways." tick "The site is hosting or distributing my copyrighted content, without my permission." Follow the DMCA link click "Infringement notification form" fill it in and you're done. You need to provide a link to your work in the form. You can just have a link to the work on one of the micro sites.
All this takes far less time to do then it took to explain. The AdSense actions take about two minutes.