The Washington Post (reg. req.) looks into the changes made to broadcast by TiVo and other technologies (With Digital Video Recorders -- Viewing Times, They Are A-Changin'). The article is actually quite pedestrian, but it does show how broadcasters make life much more difficult for themselves:

Local news -- the most popular and lucrative programming a television station can produce -- has been absent from the exploding Internet media realm, meaning people who want local traffic, weather and news updates have been turning, generally, to newspaper Web sites, leaving television in the Web dust.

The reason: Each television station has the exclusive broadcast rights for its geographic region. As the Internet is global, Washington's WUSA-9, a CBS affiliate, doesn't want local Web users watching CBS from, for instance, the Los Angeles CBS affiliate. Local stations have kept their broadcasts off the Internet for this reason.