Viber The Ultimate Free calls from your SmartPhone

learned about this today...it's a pretty nifty app...that is, you have to find someone that has it.

But is has lots of potential, saves one from call charges. I see it very useful for someone who travels a lot. Just buy a prepaid SIM, subscribe to an unlimited data service and you can now call international or other people that uses this service. Pretty good for international companies.