The New York Times reports that Google has a new partnership with Nielsen Co. 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. Since May, Google has sold ads on the 125 national satellite channels distributed by EchoStar Communications' Dish Network. Google is responsible for a portion of EchoStar's local time and creates an online auction market for it. Google then analyzes data from set-top boxes to determine which ads were watched or skipped, with a second-by-second breakdown. With Nielsen's help, Google will begin to take that information and overlay sampling-based ratings, adding a rich demographic layer to the raw numbers EchoStar provides.