IT IS POSSIBLE FOR ADVERTS ON WEBPAGES TO MONITOR THE BUTTONS YOU PRESS ON YOUR KEYBOARD AND WHERE YOUR MOUSE GOES. GOOGLE AD SERVICES ARE THE LARGEST AD SUPPLIER IN THE WORLD, THEY ARE ALSO THEREFORE THE GREATEST SPYS. WE SPEND A MAJORITY OF OUR LIVES INFRONT OF SCREENS, THEY ARE WATCHING WHAT WE ARE UP TO MOST OF OUR LIVES.