> entirely voluntary google+ social network ... is a bit of a stretch. I believe the vast majority of users on Google+ were strongarmed in. Basically just by having a Google account that they used for anything (gmail, docs, youtube), suddenly a Google+ profile was created for them, and then things like their Android reviews, play store purchases, etc were being associated with the + profile.

Yes, I make all information about me available to public when I put it online at all, but I really don't want my every online impact fully traceable back to me and to one another without that being explicit intent. Google+ subversively does that to everything their users do, and it blows.