They definitely used results from Google. They use results for terms users entered to Google to crawl pages that are not in their index (torsorophy example whi

They definitely used results from Google. They use results for terms users entered to Google to crawl pages that are not in their index (torsorophy example which is not an artificial one) therefore enriching their index based on google's results, incresing their depth. As for ranking, it is more blurry, but When you record users clicks, which directly correlates with ranking, it starts stinking.