Google has been offering Gmail users the ability to call standard phone lines for awhile, and it looks like the service will be continuing through 2013. Americans and Canadians can keep making calls for free, while international users will still have access to reasonable rates.
It's not a huge surprise that the service is continuing, since Google has extended Gmail calling since launching in the summer of 2010. Right now it's still only for desktop, but it sure would be nice to see the feature folded into Android's Google Talk or Voice (for those that have it) at some point.
How often do you guys use Gmail's phone calling service? How much do you figure services like this peeve carriers? Can Google reasonably expect to compete with Skype (and by association Windows Phone) on the VoIP front?