Until a few months ago allfreecalls.net used to allow unlimited free calls to landlines in around 30-40 countries around the world. They managed this through a loophole in the US system by cashing in on phone subsidies from "rural" states in the US.
Now, after being shutdown by AT&T in February 2007 they have just relaunched their service under the name yak4ever.com. The difference is now that all users have to register to become"members of the club" and have to provide uo to 10 phone numbers from the countries on offer. These calls will again be free and aparently no catch. It seems to work.
The countries yak4free.net now serve are:
Argentina, Australia, Belgium, Brazil (Rio De Janerio), Canada, China, Christmas & Coco’s Island, Cyprus, Denmark, France, Germany, Greece, Hungary, Ireland, Israel, Italy, Mexico, Netherlands, Norway, Poland (Warsaw), Portugal, Russia, Singapore, South Korea, Spain, Sweden, Switzerland, Thailand, UK and USA