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On-demand viewing behaviors, which have been reshaping television since the first TiVo DVR was shipped in 1999, are becoming more pronounced with each passing year, sometimes to the benefit of networks and advertisers and other times to their detriment.

What is notable about the start of the new fall TV season, according to network executives, is a surge in not just delayed viewing, but very-delayed viewing. Some people who might have previously time-shifted the new NBC drama “The Blacklist” by one day, for example, are now waiting longer to watch, partly because of the sheer number of shows on their mental to-watch lists.

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– http://www.nytimes.com/2013/10/07/business/media/dvrs-shift-tv-habits-and-ratings.html?pagewanted=1&ref=todayspaper