The interesting side-effect is that it LOOKS like that bogs which indeed scrape content from such "content farms" are NOT affected. Assuming that such blogs are tightly covering a specific niche.
While the distributing sites (article sites) are getting hit, the scraper sites experience a BOOST...using the content which Google actually deemed as "junk". <-- the irony
Countless of reports by site owners who own autoblogs using scraped content, reporting a boost after the recent change.
So..the irony is that the recent change will support "crap" autoblogs as long as they stay close within a topic...and the big competition where the content ORIGINATED is conveniently moved down in rankings.