1. Maclean’s. Facebook Releases Stats About Canadian Usage; 14 Million Daily Users. Available from URL: http://www2.macleans.ca/2013/08/13/facebook-releases-stats-about-canadian-usage-14-million-daily-users/ (accessed February 28, 2014).
2. Twitter. Reports Fourth Quarter and Fiscal Year 2013 Results. Available from URL: https://investor.twitterinc.com/releasedetail.cfm?ReleaseID=823321 (accessed February 28, 2014).
3. Mail Online. Nomophobia is the Fear of Being Out of Mobile Phone Contact - and it’s the Plague of our 24/7 Age. Available from URL: http://www.dailymail.co.uk/news/article-550610/Nomophobia-fear-mobile-phone-contact-plague-24-7-age.html (accessed February 28, 2014).
4. King AL, Valença AM, Nardi AE. Nomophobia: the mobile phone in panic disorder with agoraphobia: reducing phobias or worsening of dependence? Cogn Behav Neurol 2010; 23: 52-4.
5. Eysenbach G. Can tweets predict citations? Metrics of social impact based on Twitter and correlation with traditional metrics of scientific impact. J Med Internet Res 2011; 13: e123.