Ars Technica: DVRs poised to change advertising culture Digital video recorders (DVRs) threaten to upend traditional TV advertising models with the ability to completely skip commercials with ease. Networks and advertisers have balked at DVR commercial skipping and have even sued to block the implementation of such features on copyright grounds. In a Forrester Research survey released Monday, time shifting is about to explode with DVR usage in over 30 million homes by 2009. In response, advertisers are planning to cut TV commercial spending 20 percent in the next five years.