How quickly will the social sites figure out what I want and give it to me?

Is this more (or less) likely to get me to click on an ad.  (And who's interest does that serve?)

And what does that do to or for people who want to find out new things?

​With so many books and videos and blog posts and the like, you could be forgiven for thinking that everyone is a millionaire, no one has mental health issues or similar and that everyone lives happily ever after...

Wrong...