In 2018, an Irish technologist named Dylan Curran downloaded the information Google had collected about him. All in all, Curran found, the corporation had gathered 5.5 GB of data on his life, or the equivalent of more than three million Word documents.In an article for the Guardian, Curran wrote that within this trove he found"every Google Ad I’ve ever viewed or clicked on, every app I’ve ever launched or used and when I did it, every website I’ve ever visited and what time I did it. They also have every image I’ve ever searched for and saved, every location I’ve ever searched for or clicked on, every news article I’ve ever searched for or read, and every single Google search I’ve made since 2009. And . . . every YouTube video I’ve ever searched for or viewed, since 2008."In addition, Curran discovered that Google keeps a detailed record of what events he attends and when he arrives, what photos he takes and when he takes them, what exercises he does and when he does them. And it has kept every email he has ever sent or received, including those he has deleted.
- from The Big Tech Extortion Racket at Harper's. Lots of interesting info on Amazon and Facebook as well.