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If Google was serious about infringement it could do one very simple thing:
Make it much harder for fly-by-night companies in third world nations to sign up for AdSense.
boycotting the entire third world is hardly fair or proportionate
That's not exactly a fair statement as not all scrapers use AdSense nor are all 3rd world webmasters scrapers. There is an intersection of the two groups, but they aren't one in the same in all cases.
#2 - This actually suggests that you can escape a Panda penalty by taking the content and displaying it on a new domain, scraping yourself essentially. I'm not saying transfer the content to a new domain and shut down the old here, I am saying fully duplicate the top pages of your site until a) Panda lets go of your old site or b) the new one stops rankings in which case you can copy it again.