" Assuming that you use Facebook, list the most important things it provides you—the particular activities that you would really miss if you were forced to stop using the service altogether. Now imagine that Facebook started charging you by the minute. How much time would you really need to spend in the typical week to keep up with your list of important Facebook activities? For most people, the answer is surprisingly small; somewhere around twenty to thirty minutes. The average Facebook user, by contrast, spends around 350 minutes per week on this company’s services "

― Cal Newport , Digital Minimalism: Choosing a Focused Life in a Noisy World