This volume constitutes the revised selected papers of the First International Conference, ICCMSN 2008, held in Dunedin, New Zealand, in June 2009. The 19 revised papers presented were carefully reviewed and selected from a total of 34 submissions. The papers are organized in topical sections on virtual environments and second life; knowledge networks and learning in social networks; applications and integration of social networking systems as well as social concepts associated with social networking.