Way too expensive for occasional use
I travel a lot and mostly use the Internet for connecting with the world. I only rarely need to make a telephone call. Skype worked fine for me. I needed to make a couple of emergency calls from Mumbai in April and noticed that Rebtel got good reviews and so set up an account. The calls were okay, but Rebtel's pricing (which is not easy to find on its website) isn't. I don't need the kind of unlimited service covered by Rebtel's prices and ended up paying more than if I'd gone through my U.S. carrier, roaming charges and all.