Main Empirical Results from Data Sets: Online guilds and offline street gangs World of warcraft World of warcraft LA gangs 1000 All guilds in all servers All guilds in all servers All gang (a) (b) 1000 s 100 0.7 -0.55 92 106 500 110°im0 L LL 10 100 10 1000 Wow guild size Cumulative gang size distribution N(s)for all Cumulative size distribution distribution of la guilds in 3 servers S1, S2, Inset: Churn vs guild size Street gangs with all S3(put together) in Oct ethnicity put together 2005 Total members 5214 Total players: 76686 Small data sets Steps even in N(s>s Data from: Ducheneaut and Yee(Palo alto Research Center)Main Empirical Results from Data Sets: Online guilds and Offline street gangs Wow Guild size distribution N(s) for all guilds in 3 servers S1, S2, S3 (put together) in Oct 2005 Total players: 76686 Cumulative size distribution Inset: Churn vs guild size Cumulative gang size distribution of LA Street gangs with all ethnicity put together Total members: 5214 Small data sets Steps even in N(s’>s) Data from: Ducheneaut and Yee (Palo Alto Research Center)