In his post Plagarism is Alive and, Sadly, Well makes reference to the issues I have raised here and here recently regarding bot-generated blogs produced from ripped off posts via RSS.
As I noted then “I expect this to become a lot more visible in the next 12-18 months” and here now we see others starting to take notice.
Don’t waste time complaining to the scraper, or the scraper’s ISP. Scrapers are in it for the Google juice, and the way to handle them and keep them away is to send a DMCA Takedown letter straight to Google. (I have a letter — mail me if you want it.)