Is their overall strategy to drive adoption working these days? I know their number of users must be quite large now, but AFAICT it is pretty much hugely inflated by being a catch-all for anyone with any kind of Google account.
I actually like Google+ quite a bit and have a lot of people in my circles and I'm in quite a lot of other people's circles, but I never actually go to Google+ anymore (unless I'm following a link to some Linus post or something from somewhere else) because it simply never hit the required critical mass of actual mainstream usage for me to switch. Everyone I know and want to keep up with IRL is still stuck on Facebook, ergo I'm stuck on Facebook even though I don't particularly care for it. Even among the smallish subgroup of people I know IRL who did embrace Google+ at first, they are virtually all like me now, with accounts that scarcely ever get used.
I'm not sure what Google+ has to do to make converts of the masses, but at least among my circles they aren't doing it currently despite whatever collateral damage they are causing in trying to force people there.