Quadrille - 12:47 pm on Dec 20, 2011 (gmt 0)
Fair point, but don't forget that Google looks at the whole source, not just your 'content' - many sites, especially machine-built sites, have acres of links, promos, crud and general trash that feature on millions of pages; one or two paragraphs rehashed (for the umpteenth time) hardly register as unique content, however advanced the automated -gibberish-producer is.
This has long been a source of sick site syndrome, and Panda has moved much further in that direction. These days it would be dangerous to gamble on how well Google can recognize rehashed drivel - I'd wager they've bought all the major crud-producers and reverse engineered them.
Small hand-made sites where rewriting of affiliate content (for example) has been done by a human being, have been largely immune to Pandalization - that's no coincidence, in my view.