1. Ankeny, J. (2008). Five mobile social networking services you should get to know. Fierce Mobile Content. Retrieved July 20, 2011, from http://www.fiercemobilecontent.com/special-reports/five-mobile-social-networking-services-you-should-get-know
2. Bennett, S. (2011). Social media showdown: Top 10 social networking sites of 2011. Infographic. Retrieved August 2, 2011, from http://www.mediabistro.com/alltwitter/social-networking-2011_b12969
3. Biggs, J. (2007). Zannel: Twitter with pictures and video. Aol Tech. Retrieved August 2, 2011, from http://techcrunch.com/2007/10/01/zannel-twitter-with-pictures-and-video/
4. Boyd, D. M., & Ellison, N. B. (2007). Social network sites: Definition, history, and scholarship. Journal of Computer-Mediated Communication, 13(1), 11. Retrieved August 11, 2011, from http://jcmc.indiana.edu/vol13/issue1/boyd.ellison.html
5. Facing the Facebook.;M.Bugga;The Chronicle of Higher Education,2006