Google Voice has 1.4 Million users – A Public Secret.
First of all google voice is an invitation only service. And it still got a B-I-G number of users. Its 1.4 million and it is huge. But this number of users was never expected to be a public information. It was a secret until BusinessWeek got a copy of a letter to the US Federal Communications Commission in response to the FCC’s questions about, among other things, Google’s blocking of certain rural phone numbers from using Google Voice.
The public version of that letter was supposed to have had chunks of sensitive info redacted and replaced by empty sections bracketed by “Begin Confidential” and “End Confidential”.
Also from this letter, register reported that google may have plans to expand this google voice service outside the US.