Word has it these people are talking with AOL/TimeWiner about deploying a digital tv type system. On page two of
http://www.ictv.com/html/product/docs/whitepap.pdf
is this little gem:

Fenced Prairie - Extends the Walled Jungle concept beyond a proprietary network to content partners on the web, while circumscribing access to a denied range of approved Web Pages.

MIT's tech review had an editorial about cable providers and how the ability to create these walled browsing environments is rather enticing, because we
can rest assured that the web pages denied would be chosen based solely on economic incentives.