Remember how a couple of years ago Facebook took the liberty of experimenting on unknowing users, adjusting their feed to see how it would affect their views on the world? Like I said then, this was of course not just an experiment but a testing of a product to be sold.
And it has now been used for both Brexit and the US Election, e.g. by Cambridge Analytica. Be very aware of the changing media, data mining and your role in it.
Read more about Cambridge Analytica
The Secret Agenda of a Facebook Quiz
These Toys Don’t Just Listen To Your Kid; They Send What They Hear
How the Trump Campaign Built an Identity Database and Used Facebook Ads to Win the Election