I don't know any friends or family who use it, but that's not what I use it for. I visit Facebook once a month to see photos of friends or family. I use G+ to engage with _interesting people_ who may or may not be my friends.

G+ is like Twitter or Groups rolled up together, but you know, with an threading/posting interface that is actually useful for having long form conversations. Many of the G+ features also handily trump Twitter and FB, such as handling media/embedding, multi-party chat, video chat, photos, etc.

G+ photos alone is useful even if you don't have a single person circled.

You're right, Google+ is not a social network in Europe, but I still visit it more often than I do Facebook.

Facebook has made me lose interest in people, or rather, people online. The feed is a sentimental heap of nothingness, and I find myself having uninstalled the main Facebook app (but of course keep the Messenger.)

Plus, on the other hand, actually offers me things I am interested in, because I haven't added those hundreds of persons who share nothing I have a feed showing what is (more) relevant to my daily life.

Edit: To that end, I don't see what is odd about Google keeping Plus going, they're offering a great service, and I hope it takes off increasingly with time.

It's not so much a social network. It's about content. I look there once a day for the occasional kitten gif and some interesting articles. I follow The Economist for example.

It's okay, but nothing compared to HN or Reddit.