CBS Launching New College Sports Ad Net; Pulls Remnants

Wednesday morning the *CBS* College Sports Network plans to announce the newest rider on the ad network bandwagon and the latest drain on remnant networks like Platform-A’s (NYSE: TWX) *CBS* College Sports Media comprised of, (produced by, and the roughly 215 official college athletic sites operated by what used to be known as CSTV. At the same time, all CBS Interactive (NYSE: CBS) sports properties will stop selling through remnant networks — no hard number but think millions of dollars.

The vertical ad network, which CBS says would have served 10-plus million uniques in March, will sell display and video advertising on multiple platforms. The prime demo is males 18-49. March, of course, includes March Madness, which produces high traffic; one key question is how the new ad net can produce across the year and what kind of growth it can deliver. GM Jason Kint tells me that CBS is launching now to take advantage of the boost from March Madness and the main site’s rebranding from CBSSportsline.

Shedding remnants: “Our remnant networks have included the major players