Free international Calls from USA by RingPlus

Ring Plus (only available from USA) provide free international calls service to any country in the world.
Ring Plus allows you to make calls to many countries and each call can last upto an hour depending upon your destination. Ring Plus replaces the ring tone with advertisement. So when you make calls, Ring plus tries to connect to your calling party and you hear the advertisement instead of hearing a ring tone on their phone,
until you are connected.