Very few people know that you can call the US and Canada for free (from anywhere in the world) from within the gmail application on PC and Mac. Take out your laptop go to your free gmail.com account (you may require the voice and video chat plugin for gmail) then click on “Make a Call” or the little phone handset Icon.
We suggest you test this and get it running before you leave, on your laptop or desktop it does not work from phones. You can make free domestic calls within the US and Canada if that is where you are. Its only free from PC and Mac that we can see so far.