Andem - 11:18 pm on Apr 25, 2013 (gmt 0)
It's actually rather amazing with some of the Blogspot sites that are nothing more than scrapers. I own a rather popular content site where we're actually getting a fair deal of traffic from the scrapers that often leave in in-content links or image links.
What's amazing is the fact that these links provide real traffic. I would imagine sites like this have high bounce rates, which would imply that most people aren't actually clicking through to links, thus little-to-no referral traffic. That would suggest, in the end, that they are getting some traffic.
In my case, I've already filed several successful DMCA requests to Google but with no closed accounts. Since these Blogspot blogs (all thus far containing AdSense) are actually getting some traffic as described above, I think there is a conflict of interest on Google's part.
I've never seen them rank above any of the keywords I (actually don't really) monitor, I suspect they might just be getting some juicy long-tail by including additional keywords on-page.
In the end, I believe Blogspot et al. should be consigned to the dustbin of history.
As a side note and from what I can gather in my experience, all of the Blogspot scrapers seem to be originating in either South Asia or Southeast Asia.