CBS is ratcheting up its online distribution thrust, with deals to distribute its cable and broadcast content online through partners including Comcast, AOL and Brightcove. The pacts are part of the broadcaster’s Interactive Audience Network offering free ad-supported content stateside, and certain clips and programming worldwide. CBS will begin selling the network over the next few weeks, with ad revenue to be shared between CBS and its partners. Comcast will initially offer CBS programming such as Showtime boxing and CSTV sports at Comcast.net and on its Fancast site when it launches this summer. The news came 3 weeks after News Corp and NBCU announced collaboration on a similar plan (Cfax, 3/23).