Almost 70% of adults in the United States used Facebook in 2018. Interestingly, Facebook does not charge any of its 2.45 billion active users for access to its platform, but instead generates revenue by collecting and analyzing personal data to sell targeted advertisements. This enormous user base is the foundation of the company’s dominance in the social-networking industry. Indeed, Facebook-owned companies account for 90% of all time spent on social-networking sites. As a result, nearly 84% of all online social advertisement spending is paid to Facebook.