Trying to analyse the amount of activity on Google+ in comparison to Facebook or Twitter yields little useful information – because it doesn’t have the same purpose as them
In The Matrix, the hacker Neo discovers how the world is keeping track of what he does. Google+ likes to do the same.
Pretty much everyone (myself included) has been reading Google+ wrongly. Because it bears many superficial resemblances to social networks such as Facebook or Twitter – you can “befriend” people, you can “follow” people without their following you back – we’ve thought that it is a social network, and judged it on that basis. By which metric, it does pretty poorly – little visible engagement, pretty much no impact on the outside world.