This research aims to determine opinions of university graduates about social networks according to their personal characteristics. The research was conducted on 203 university graduates who received teacher training at Sakarya University in 2010-2011 academic year. Two different data collection tools were administered to the participating university graduates and correlation analysis was conducted in light of data collected from the tools above. As is widely accepted by the technology users, Facebook, the most used social network in Turkey and across the world, was selected as the social network for the research. A positive and significant relationship was found among Facebook-related opinions stated by university graduates having an extravert personality as a result of data collected through the Eysenck Personality Questionnaire-Revised/Short-Form and Opinions of University Graduates about Social Networks data collection tools. (Contains 6 tables.)