[tuyguntn]

- tomorrow you can become billionaire and someone will share your history of porn movies to worsen your reputation.

- after purchasing some product in physical world, you might get lots of annoying ads afterwards

- you have small conflicts at home with your partner and suddenly when service which is tracking you hacked all your internal conflicts made public, which again might hurt your reputation

lost goes on and on

[jolmg]

- Businesses sell data on the purchasing history of their users. Other companies buy this data to cross reference and derive new, more useful information about people, for example to calculate their purchasing power. Online businesses buy this information to accurately determine how high they can set their price for individual customers.