This is how Facebook is accessing your data and selling it
This is what makes facebook so great — it knows everything about you! — and what makes facebook so awful — IT KNOWS EVERYTHING ABOUT YOU. And while its network of 2.13 billion monthly users doesn’t pay any money to use the core service, Facebook makes plenty of money — millions daily — *buy providing advertisers access to that user data*. And everyone on the site agreed to this when they signed up.