I ran a search and found a page that was obviously a scraper site but had also been super-saturated with keywords. The words (not the real terms but just as an example) "Blue" and "Green" appeared a total of 590 times in keywords, description and other meta tags.
Yes, the page had a PR of 0 -- but for my target search term it was listed ABOVE my site which has a PR of 6.
Just wondering what you think about it.