[ogurechny]

As many other people, you are calling something “private” when it is not.

“Privately shared with friends” used to mean that only you and your friends know something. You don't “share” anything with “friends” on a social network. You give the information to a giant corporation. If it finds it suitable, it then delivers it to other users, but only after it records your location, analyzes the content to check if you were, say, affected by some melodramatic event (and therefore should be tricked into spending more time… I mean, get “personal recommendations” for a certain kind of content), and does a billion other things.

If you consider that this is fine, please relay all your conversations with family and friends through me from now on. I offer secure, reliable, fast, yada yada communication service. And it's hip! Ask anyone on the street what they use.