aristotle - 4:05 pm on Aug 27, 2011 (gmt 0)
I don't assume that. Scraping an article and then "spinning" it by rewriting each sentence is a practice that Google already tries to catch. There have been several Google engineers posting about it on their Webmaster Forums. So if you see such pages outranking the original, and you feel like reporting them, I'm pretty sure they would take in the information.
I wonder if this applies to Wikipedia. A couple of years ago someone created a new Wikipedia page and copied virtually all of its content from a much older page on one of my sites. Most of the information was copied almost verbatim, with only a few minor changes in the wording. Nothing new has ever been added to the page since then. My page is still number 1 in Google for its main term, but the Wikipedia page is number 2, and will probably move ahead of mine eventually.