It just works. This is great and 2 cents per minute in most countries outside the free zone (US and Canada). Click here to try: gmail.com/call
Google Voice is added to Gmail; Boosts exposure but still falls short in other areas | ZDNet: "The service is free and calls to the phones in the U.S. and Canada are free, at least through the end of the year. The company said it has no plans to start charging for calls to the U.S. and Canada but was clear that some of that is dependent on making some money on international calls."