Google+ With 60M+ Users And Growing… But Active User Count Still Unknown Posted by googletron on Tuesday December 27, 2011 @08:20PM from the techcrunch.com dept. http://techcrunch.com/2011/12/27/googleplus/ ( 1 comment | on HN )
A separate issue is how to accurately track "active users" given that G+ is getting so tightly integrated with almost all popular Google services.