Each week Ross Rubin contributes Switched On, a column about consumer technology. Just two years ago, Google TV paved a way for Android to enter the television via integrated sets, Blu-ray players, dedicated TV add-ons and pay TV set-top devices. For now, the product may almost be as much of a hobby for the purveyor of questionable eyewear as Apple TV is for Apple, Google's mobile OS competitor. But it's clear that the platform isn't all things to all
