According to Forrester:
Tablets are displacing PCs and smartphones as the “couch computer” of choice: 85% of US tablet owners use their tablets while watching TV, and according to Nielsen, 30% of total tablet time is spent while watching TV. The tablet’s complementary nature to the living room TV gives a raison d’etre to “second screen” apps like Miso, GetGlue, and Viggle that engage consumers in conversation and content related to what’s on the big screen.
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What about DVRs? The article didn’t even mention that.