If 2006 was the year of online video, 2007 was the year of the full-length on­line episode. Logically, 2008 might be the year of improved advertising models for this new television viewing option. As opposed to paying to download a commercial-free copy to a computer, the major networks include 30-second commercial spots during streamed, af­ter-market episodes. "This is the cost of entry," said David Sable, vice chairman and COO of Wunderman.