It may be an expected holiday gift, but it's still a nice one: Google's VoIP service in Gmail will remain free of charge for calls within the United States and Canada in 2013. A note on the Gmail Blog announced as much today; the news ushers in a thrillingthird year of free Google Voice service for US and Canadian customers, right through the standard Gmail interface. Of course, we prefer the retro-inspired phone booth that Google showed off back in 2010 when the service was first announced, but free is free. Now, what to get for the megacorporation that has everything. We're thinking ... Furby? Probably a Furby.