Back in August Google announced free phone calls from their GMail phone client for the rest of 2010. Today they’ve announced the free calling will be extended through out all of 2011–free phone calls in the US and Canada all year long.
If you’re not already using Gmail’s voice and video chat, grab a copy of the extension here to get started. All users in the US and Canada can call anywhere within the two countries for free or enjoy low international rates when calling other countries.
Free Calling in Gmail Extended Through 2011 [The Official Gmail Blog]