This^100.

It's interesting that facebook got it initially right, and NEVER implemented 'who's viewed your profile/picture' - as they know that this (possibility of others seeing our actions) would greatly reduce our actions/viewing (us fearing it being visible).

WHILE now, they're not getting it right and publish our actions (likes/comments) like a mad spammer.

It looks like they crossed the border while playing with our curiosity what-others-do, but forgotten that this means, that our actions need to be revealed to others also which will make us reluctant the moment we understand implications.

Snow ball effect to come?

I find that the terminology used also matters in how people know about managing the audience for what they write. In Facebook, you have to create "lists", which nobody knows about and most people don't care to create. In Google+, from the beginning you're told about "circles" (like "friends circle"), which is so easy to understand and also choose the cirles you want to address when publishing posts.

In this regard, Facebook has always seemed like it wanted people to overshare with everybody (it's been proven with its blunders on the privacy front). Now the same overload is causing fatigue among its users (at least to some extent).

I'm frustrated that Google+ has been stagnant like a beta service without new features or even addressing usability issues to make it better for years now (vanity URLs for groups/users - still no; changing group privacy after creation - still no; and many other annoyances).

This seems to be very much down to disposition