They are hundreds of thousands of people out there doing stuff to your internet that you probably think is automatic. They aren't computer programmers, they're just regular people working from their offices, homes and bedrooms. They are the people of Amazon Mechanical Turk.
Amazon Mechanical Turk is an online marketplace for work. Businesses use it to farm out tiny little tasks like counting the number of people in a photo, and people around the world race to perform those tasks, sometimes for pennies.