I am considered an oddity among some of my friends and family because I don't have cable. I do have a TV, but I rely on DVDs, Netflix and my Roku player for my television viewing. When someone asks me if I've seen a commercial, I just smile and say "no". In fact, my daughter (at 4 years old) was shocked the first time she watched Nickelodeon when the commercials came on. She had never seen one. But maybe my odd choice is becoming less odd. A new report by Nielsen shows that for the first time since 1992, there are less US households with television sets. To be sure, the vast majority of households still own TVs, but the percentage has gone from 98.9 percent to 96.7 percent. Part of the explanation is the economy, and the change to digital. But is there another explanation?