The big question I get asked more often than others is “What about Google+? That’s gotta be a good bet, right? Google must like us using their stuff, yeah?”
There’s been a bit of a “conscious uncoupling” of Google+ from other Google activity. This suggests they’re finally accepting that not everyone wants their email, search results etc to be quite so closely linked to their social media. Google+ Authoriship has vanished from Search Results, and you no longer need to sign up for Google+ when you sign up for a general Google account.
Google+ isn’t dead by any means, but it’s not the mainstream force Google have been really aspiring to since its launch. This current activity suggests they’re looking to let it drift from such tight integration with other google products.