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Nielsen vs Quantcast

Showcases the number of sites that are qualified by Quantcast and Nielsen.



grep pattern Number of Urls Number of Domains
secure-us.imrworldwide.com/cgi-bin/m?ci= 63,847,203 16,628
http://pixel.quantserve.com/api/segments.json?a= 6,086,103 2,250

List of top 100 domains in rank order: