So a very brief summary is that a profile created from all data collected about every individual. This profile has a better understanding of you who you are as a person than you yourself or your family and friends have about you. This profile is then sold to the highest bidder who then physiologically manipulates you to into either buying a product, believing false information and even pushing you towards voting for a specific political party and therefore corrupting the foundation of any democracy. Just to be clear this is not speculation or a theory this has all already happened. Most social media applications are just data miners, with a small social media function. Personal data is worth more than oil, wars have been fought over oil so I don't see any laws government intervention doing anything to stop it, it is totally up to the consumer to protect their personal data.