American cable-TV giant Comcast is offering a new digital video recorder. “About 5 percent of US households now own digital video recording systems, a figure that is expected to rise to 22 percent by 2008. Even though the numbers are small, industry executives expect growing DVR usage to roil the $58 billion US television advertising market, as increasing numbers of consumers, particularly the most affluent who are most likely to rent the devices, get the power to program their own television viewing, and ignore the traditional 30-second television spot.”