CmdrTaco from the who-needs-landlines dept.
From the article "Google Voice users learned late Monday that the service now has a way of making purely Internet-based phone calls. Making a SIP call with a 'sip:' prefix, the Google Voice phone number and @sip.voice.google.com skips the conventional phone network entirely, saving users cellphone minutes. Disruptive Telephony tested it and found that a call worked 'great.'"
The perversity of nature is nowhere better demonstrated by the fact that, when
exposed to the same atmosphere, bread becomes hard while crackers become soft.