Online analytics giant ComScore has launched a service with Information Resources Inc. (IRI) that measures the effectiveness of online ad campaigns on bricks-and-mortal retail “consumer packaged goods” sales, DM News reports. IRI’s Consumer Network platform measures retail sales, while ComScore tracks which of those consumers who bought a particular product were exposed to a certain ad campaign online.

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Yelp may be playing chicken with one of the Internet’s biggest players. Last week, Google was said to be close to buying the popular review site for $550 million, but Yelp’s chief backed out, the New York Post reports. In the last year, Yelp has doubled its audience and draws nearly 9 million unique visitors a month, according to comScore.

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Have you ever wondered where the readers of The New York Times’s Web site come from, and what kind of devices they use to read its content? The two videos here show the traffic to NYTimes.com on June 25, 2009, the day Michael Jackson died. The 24-hour period is compressed into a little over a minute and a half.

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