Every time you log in to Facebook, every time you click on your News Feed, every time you Like a photo, every time you send anything via Messenger, you add another data point to the galaxy they already have regarding you and your behavior.

A great coder can easily be 50 times more productive than a mediocre one, while bad ones ultimately have negative productivity.

It is probable that Facebook boasts the broadest, deepest, and most comprehensive dataset of human information, interests, and activity ever collected.

Jon Evans Quotes