Be aware, Do not proceed to buy the credits without confirming that the VoIP site is legitimate. There had been some cased of fraud websites with good offers.
If you receive a mail or orkut scrap or come across a website which claims the following
Unlimited Calls (Chatter Box Plan) to 9 countries. (U.S.A., U.K., Singapore, Australia, Germany, India, China, Netherlands and France)Works with every