1. http://articles.cnn.com/2009-04-23/health/ep.facebook.addict_1_facebook-page-facebook-world-social-networking?_s=PM:HEALTH
2. http://newsfeed.time.com/2010/07/08/its-time-to-confront-your-facebook-addiction/
3. http://www.nytimes.com/2009/12/21/technology/internet/21facebook.html
4. http://www.dailymail.co.uk/sciencetech/article-1079633/Facebook-blame-friendship-addiction-women.html
5. http://blog.nielsen.com/nielsenwire/global/global-audience-spends-two-hours-more-a-month-on-social-networks-than-last-year/