Technically, everyone with a Google profile also had a Google+ profile.
I never really used it, but the concept and inner working was good, with just the few ideas that would make Facebook better for interaction. That said, I abandoned most social media last year - I manage the social media of the non-profit I work for, and that's already enough.
The internet in general, and social media in particular, proved themselves as quite the social experiment. Not sure I like the results, though.