Comcast online video trial grows to 23 networks - USATODAY.com

PHILADELPHIA — Seventeen more cable TV networks said Tuesday they are joining an online video trial by Comcast, a move that tacitly acknowledges advertising isn't enough to support shows streamed over the Internet.

The networks join a growing roster of content providers — including CBS, HBO, Cinemax, TBS, TNT and Starz — that have agreed to participate in Comcast's test, bringing the total to 23 programmers since the initiative was announced in June...