Who’s to save me from an auto-incestuous intellectual degeneration, when being fed info based on my own preferences?

I have some preferences and Google, Facebook, Twitter and other social media feed me based on these. And so the more Goggle, Facebook, Twitter and other social media gets to know my preferences the more I will be entering into an incestuous relation with myself… in other words the more I run the risk that my intellect might incestuously degenerate.

Who is to supply me the diversity I need in order to find out any new preferences in life?

So, for a starter, it looks that, as a minimum minimorum, I need a copyright of my own preferences.