Any time David Pogue calls something a "game changer", I roll my eyes.
The guy has no frikkin clue what he is talking about. He's taking a pretty basic VOIP service, and making it sound like nothing that has ever been done before.
"make and receive calls either using either the AT&T airwaves as usual, or -- now this is the best part -- over the Internet."
Seriously? The company must have paid him a fortune to post such a piece of rubbish.