Definitely notify Google (although good luck getting a hold of a human). The sooner, the better. They just put up this form today which might help. But... definitely file your DMCA's and go nuclear on them. Contact their hosting company too. You're lucky if they have a domain name as it's easier to track. The BIG pain in the neck is the spammers putting stuff up on Blogspot.
Here's the form from Matt Cutt's recent tweet:
"Scrapers getting you down? Tell us about blog scrapers you see:
We need datapoints for testing."