Traditional media companies trying to stem the flow of advertising dollars to Google and other large Internet companies increasingly are building ad networks of their own, anchored by their brands. The latest, Forbes Inc. was set to announce Monday that it will start selling ads this spring for about 400 financial blogs. In recent months, Conde Nast, Viacom Inc., CBS Corp., and other major media companies have unveiled topic-specifi ad networks. But these media networks - some linking fewer than a dozen handpicked Web sites - may have a tough time competing with the networks of thousands assembled by Google, Yahoo Inc., Microsoft Corp., and Time Warners Inc.'s AOL.
-Associated Press
