I don't know who's paying for this service, but my wife just called Israel with it:
FREE INTERNATIONAL CALLS You can now call any of 50 countries from the United States, free. Talk as long as you like. You pay only for a call to the access number in Iowa, which is 712-858-8883; if you use your cellphone on nights or weekends, even that’s a free call.
There’s no contract, no ads, nothing to sign up for. At the prompt, press 1 for English. Then punch in 011, the country code and the phone number. The call rings through immediately.
Fine print: In some countries, you can reach only landlines, not cellphones. And in part because FuturePhone's lines have been flooded, its success at placing calls is not, ahem, 100 percent.
Hat tip: NY Times.