1. How Many People Use Facebook, Youtube, and Other Social Media?https://expandedramblings.com/index.php/resource-how-many-people-use-the-top-social-media/
2. Number of Social Media Users Passes 3 Billion with No Signs of Slowinghttps://thenextweb.com/contributors/2017/08/07/number-social-media-users-passes-3-billion-no-signs-slowing/
3. Daily Time Spent on Social Networking by Internet Users Worldwide from 2012 to 2017 (in Minutes)https://www.statista.com/statistics/433871/daily-social-media-usage-worldwide/
4. Number of Monthly Active Facebook Users Worldwide as of 3rd Quarter 2017 (in Millions)https://www.statista.com/statistics/264810/number-of-monthly-active-facebook-users-worldwide/
5. Most Famous Social Network Sites Worldwide as of September 2017, Ranked by Number of Active Users (in Millions)https://www.statista.com/statistics/272014/global-social-networks-ranked-by-number-of-users/