I just watched a video of Amit Singh’s presentation at Atmosphere London 2013 and this slide was pretty interesting. It has some user stats for Google+ which are helpful in clarifying active “stream” users (presumably plus.google.com) and users considered to be Google+ users because Google+ is enabled in their Google accounts.
User the larger figure to measure Google+ users isn’t too problematic because of how pervasive Google+ is throughout Google’s services but I think the metric people often think of as a measure of Google+ user adoption tends to be more the stream itself as opposed to the broader view of Google+.
This takes me back to a post I wrote a little while ago about users and Google+ and how more people are probably Google+ users than you may think.
What do you think?