TiVo today will begin reporting TiVo Stop Watch, a monthly commercial ratings system “based on data collected from its 4.3 million [DVR] units.” TiVo’s database features “a year’s worth of data from random sampling of 20,000 homes – twice that collected by Nielsen Media Research”http://www.nypost.com/seven/07162007/business/tivo_elevates_ads_to_ratings_universe_business_susannah_cahalan.htm
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