Not only are DVRs not killing TV advertising, but more folks are watching shows because of them, and many of those people are too lazy to skip commercials:

Almost across the board, the gains for playback are growing. The best preseason estimate for the current season, said David F. Poltrack, the chief research officer for CBS, was about a 1 percent increase from playback over the live program for the networks combined. Instead, many are in the range of 7 to 12 percent, with some shows having increases of more than 20 percent when DVR ratings are added. The four networks together are averaging a 10 percent increase.

Of course, as with almost all such things so far, digital media isn’t actually killing a business, just threatening one particular model, revealing another more profitable model.