Turns out that smart TVs can be, well, pretty dumb. Even moderately priced sets can now connect to the Internet and run Netflix and other apps -- that's the "smart" part. Yet many people are ignoring the built-in features and turning to Apple TV, Roku and other stand-alone streaming devices that often do a better job.

In an August report, the NPD Group estimates that roughly a third of smart TVs in the U.S. weren't actually connected to the Internet. That's down from about half two years earlier, but still not good. Researchers at Parks Associates found that even as more Americans are using smart TV functions, streaming device usage has grown even faster.

"If you're a streaming media box (maker), you've got much more ability to push new features out into the market at an affordable price," says Barbara Kraus, Parks Associates' director of research. "They're very stiff competition for smart TVs."

From the article "In A Connected World, Why Aren't Smart TVs Very Clever?" by Anick Jesdanun and Ryan Nakashima.