The Google take-over of Admeld (worth about 400 million) is being reviewed by the Dept. of Justice for anti-trust concerns.
Admeld is a technology and service company that helps large publishers optimize and manage their digital ad inventory--helping them maximize yield.
Google's interest in Admeld will be to strengthen it's own ad sales by providing it's services/products to large ad publishers. Admeld's clients include Weather Channel, IDG TechNetwork, and large newspaper companies like The New York Times Company, Hearst, Tribune and Gannett. The Admeld network spans both the U.S. and Europe.