The Voice over IP Insurrection

"It only took ten years after the arrival of the commercial Internet for most people to get an email address. The same outcome seems likely with regard to VoIP telephone numbers. In any case, the challenge of producing a low cost VoIP version of traditional telephone call seems largely solved. The most interesting developments remain to come as VoIP enables capabilities that go beyond the plain old telephone call. With the price of the traditional telephone call going to zero, there will be enormous incentives to offer more value."