Over the coming weeks, UK-style phone booths will pop-up around the US in airports and at universities, allowing anyone to make free calls to anywhere in the world. The promotion is designed to spread awareness of Google Voice service. You pick up the handset, hear a little Google Voice greeting, then enter the number you wanted. It feels a bit weird to enter a # symbol at the end of your dialing.
Also refer to our Google Voice + Gmail = Free Voice Calls For Those In US.
[Thanks, Danny Sullivan]