Clark Howard profiled an interesting option for making international phone calls on his show last week: http://freephone2phone.com.
Freephone2phone.com involves calling into a local access number (available for Raleigh and Durham (if you can place calls within those cities for free) and then listening to one to two short 10 - 15 second ads. Once you listen to the ads, you get 10 minutes of free international phone calls to over 50 countries. If you make a call lasting between 5 and 10 minutes during a day, every subsequent call to that particular number on that day is limited to 5 minutes each (to discourage abuse of the freebie).
Most calls are limited to calling landlines in other countries because in many countries, you can't call a cell phone for free. There are a few countries where you can call cellphones for free including the U.S, Canada, Hong Kong and some others.
For more information and to find the Raleigh and Durham access numbers, click HERE for the freephone2phone website.
To read the Clark Howard and New York Times stories about this service, click on the links in the box above.