Nobody Is Using Google+
businessinsider.com
businessinsider.com
Circles let you differentiate the content you share with work friends and wider colleagues.
I have absolutely no interest in using G+ for my personal life but it's a very handy tool for internal communication in an organisation.
I, for myself can see a gradual move from Facebook to Whatsapp. That's because everybody uses Whatsapp (at least in Germany), thus making it available just as Facebook was/is. However, by creating groups in Whatsapp you have something like a private Facebook where you can share data with the people you choose. Very simple. I can't remember the last time I posted something on Facebook, but while I wrote this post I shared something in two Whatsapp groups.
G+ is in my opinion the a very good solution (circles are like whatsapp groups for your friends), but it didn't make. I think that's mainly because of the way you gained access to the product. For G+ you need the large, and untransparent Google account, whereas whatsapp needs just a phone number.
Poor Google Plus.