Google, which dominates the market for advertising on the Internet, seems to be hoping to do the same thing on television.The company is set to announce a partnership with the Nielsen Company, the voice of authority in measuring television audiences, that will give advertisers a more vivid and accurate snapshot than ever before of how many people are viewing commercials on a second-by-second basis, and who those people are.
http://nytimes.com/2007/10/24/business/media/24adco.html
http://iht.com/articles/2007/10/24/business/google.php