Ok I'll elaborate:

8 years ago Facebook released a study about manipulating the psychology of teenagers with depression, and no one seemed to care that they were actively sending content to those kids designed to make them feel even more depressed, and were happy with their results.

The way they could target people is due to their online footprint, providing age and gender demographics, plus all of the content scraping from every post they had ever made on facebook to identify vulnerable people.

This was eight years ago.

Imagine how much better their mood detection and content curation has gotten.

The bigger your information presence online, the easier it is for unethical organizations to use that information against you.

Most of you think 'Oh that just means I'll be advertised at more'.

No, that's not just it.

Brexit was pushed through using a massive user info campaign from Cambridge Analityca that custom crafted public messages specifically shaped by the guidance of their MASSIVE online user behavior database analysis.

And look what happened.

So even the greatest danger is not that YOU will be advertised at.

The greatest danger is that with aggregated data, they can trigger the most vulnerable and reactionary to to basically whatever they want.

Hardly anyone understand how dangerous this is.