Google+ reportedly passes 43 million users | Google + Project | Scoop.it
From thenextweb.com - September 22, 2011 6:05 PM

If the algorithms are all working right, then Google+’s “unofficial statistician” Paul Allen believes that Google+ now has over 43 million users. Allen, whose name you might know as being the founder of Ancestry.com has a method whereby he estimates the total number of users on Google+ based upon uncommon surnames.