This looks promising. Hopefully they do not skip over the adult industry when doing this:

Google just announced that, starting next week, its search algorithm will start taking a new signal into account: the number of valid copyright removal notices it receives for a given site. According to Google, "this ranking change should help users find legitimate, quality sources of content more easily." The idea here is obviously to punish pirate sites by pushing links to them down on Google's search results pages and to appease copyright holders who often claim that Google doesn't do enough to remove links to copyrighted material.
Continue reading at TechCrunch...

Every time you send a DMCA notice make sure you copy it to Google as well!