http://www.voip.com/why_voip_phone.aspx - By using a home VoIP service, you stand to save a lot of money. A residential VoIP service allows you to make phone calls to any telephone number in the world at the same low rate. You can also use your VoIP home phone service to call others with the same service. In that case, calls made through your home VoIP service are 100% free.