1. Pew Research Center: Internet, Science & Technology Internet/Broadband Fact Sheet. January 12, 2017. Available at http://www.pewinternet.org/fact-sheet/internet-broadband/ . (Accessed April 2, 2017).
2. Internet World Stats. Internet usage statistics: the internet big picture. Available at http://www.internetworldstats.com/stats.htm . (Accessed April 2, 2017).
3. Internet Live Stats. Internet Users. Available at http://www.internetlivestats.com/internet-users/ . (Accessed April 2, 2017).
4. Facebook Investor Relations. Facebook Reports Fourth Quarter and Full Year 2016 Results Available at https://investor.fb.com/investor-news/press-release-details/2017/facebook-Reports-Fourth-Quarter-and-Full-Year-2016-Results/default.aspx . (Accessed April 2, 2017).
5. • Inkster B, Stillwell D, Kosinski M, Jones B. A decade into Facebook: where is psychiatry in the digital age? Lancet Psychiatry 2016:3:1087-90. This article makes a strong case for why clinicians and researchers should engage with social media.