There’s no Visual Voicemail (voice mail messages appear in a written list) or Microsoft Exchange compatibility, either.

Perhaps most menacingly, the Internet's openness allows well-organized groups to simulate support, to "capture and impersonate the public voice," as Mr. Fishkin wrote in an E-mail exchange.

As early as in ancient times, people on the adoption of primitive and simple voice, body language, symbols such as the exchange of information.