You probably already knew that Google Voice lets you make free long distance calls inside the U.S. (the way cellphones work, I think most of us just assume this is a given, anyway), but today Google Voice announces that they're bringing back free calls to Canada. This feature existed back when Google Voice was called GrandCentral, but it's great to see another way you can get more out of Google Voice. (Unfortunately, Google Voice is still only available in the U.S.) [Google Voice Blog]
