11.8 million UK users (The Guardian 2011) go online, at home, at work or elsewhere. There are several types of Internet use, including non-interpersonal communication use (e.g., entertainment) and interpersonal communication use (e.g., email and social media use). Of these Internet users, the average user spends 13 hours per week online. Of these 13 hours, the average user worldwide spent more than five and a half hours on social networks in December 2009, up 200 percent from the same month in 2008. A social network is a social structure made up of individuals (or organizations) called "nodes", which are connected by one or more specific types of interdependence, such as friendship, common interests, financial exchanges, dislikes, sexual relationships, or relationships of beliefs or knowledge. Social networks, such as Facebook, Myspace, Twitter etc... offer users the opportunity to join an online friend network that allows them to stay in touch with current friends, reconnect with old friends and/or create real-life friendships by joining groups/forums of those who share similar interests. In addition to blogs and forums, SNS users can express themselves by designing their Facebook profile page to reflect their individual personality. For these and other reasons, 110 million Americans, or 60% of the online population, use social networks. Numerous research over the years has sought to uncover the many ways in which personality can influence an individual's media use patterns, in particular, on the Internet or online (Hall, 2005). This may be due to the assumption that people behave differently in various social situations. These differences may influence how and why they use paper-based computer research. Computer science lecture notes, 5075, 392-400. Buffardi, L. E., & Campbell, W. K. (2008). Narcissism and social networking websites. Personality and Social Psychology Bulletin, 34, 1303-1314. John, O. P., Naumann, L. P., & Soto, C. J. (2008). Paradigm shift to the Big-Five integrative trait taxonomy: History, measurement, and conceptual issues. In O. P. John, R. W. Robins, & L. A. Pervin (Eds.), Handbook of personality: Theory and research (pp. 114–158). New York, NY: Guilford Press. Raskin, R., & Terry, H. (1988). A principal components analysis of the Narcissistic Personality Inventory and further evidence of its construct validity. Journal of Personality and Social Psychology, 54(5). Papacharissi, Z., & Rubin, A. M. (2000). Predictors of Internet use [Electronic version]. Journal of Broadcasting and Electronic Media, 44, 175–196.