This is not a scam, but it's an advertisement. To use the service for free, both have to be the member of JAJAH. See the faq. What is JAJAH Free Global Calling? http://www.jajah.com/info/help/faq/freecalls/ It applies when both call participants are registered and active JAJAH users. In countries where free phone calls are not available, or if someone is calling a non-JAJAH member, calls are subject to JAJAH’s regular low rates.