I'm thinking my time with Google+ is probably done.
It's so clearly unloved by Google, with no major updates for some time, that I doubt it is worth investing in a product which is so clearly in maintenance mode. Many of the people I follow are no longer posting here. Blogger blogposts, automatically thrown in here, make up much of the remainder of things I see. Comments were once thoughtful, but are now mostly full of idiots; communities are either empty or full of spam. For posts containing links to content, apart from Android-related content Google+ has next to no interaction, and as a website owner, there is absolutely no benefit in me spending the time on Google+, since it produces no tangible benefits in either interaction or traffic.
The most obvious sign of G+'s demise (quite apart from no mentions at I/O last year) is that Google continues to use Google Groups as their main discussion mechanism. Official looking product communities here are either full of spam (Google Play being one more obvious example) or are digital tumbleweed (Freebase, AdSense, and others). Google's many official posts make no attempt to interact or converse with commenters, either. Authorship has been removed, too. If Google doesn't care about Google+, why should I?
I wanted Google+ to work, but it is clearer every day that - for whatever reason - it simply doesn't. Google+ zealots try to desperately claim that it isn't a ghost town, but in the main they are trying to defend Google+ because they have invested time in it for their SEO or social business that they don't want to go to waste. The reality is that, apart from the zealots, there are precious few media outlets and companies using Google+; and apart from a few niche content types, Google+ is almost invisible in terms of interaction or traffic generation.
If the content was good, I was prepared to overlook some of G+'s shortcomings. For a while, this was a thoughtful and interesting "shared interests network": but it seems that it is becoming less and less so.
Perhaps this is a bigger issue: that Google is losing its way on many things. What was once an innovative, exciting company now appears to be more me-too than ever. I don't know.
I'll keep popping in here to privately share photos of my daughter with family. Facebook is blocked in China, whereas Google+ isn't. (And that, too, speaks volumes). But I suspect I'll do little else.