I know alot of people right now are using VoipCheap - FREE CALLS to regular phones over the internet! and www.freeinternetcalls.com - both of these make it so you can call the US and Canada mobile and landlines for free from your computer. My family can't even tell the difference that it is online and not a real phone. I think if you go to the website you actually get alot of countries for free. This would be of course valid for any island as long as you have internet.