Matt I have seen little response from Google, this is a previous post I had on the same topic:

I reported to Google a website that had 100’s of domains pointing to one website that was cloaking my copy. In about two weeks I noticed many of the domains of this website were missing from the search and figured Google did something. But many new domains pointing to this same website had shown up. I would say it has been about 5 weeks and 3 more spam report submissions to Google and I have yet to see them do something about this obvious deception and theft. This is not a very encouraging campaign effort on their part for halting spam.

Jamie