Does Showing Off Help to Make Friends? Experimenting a Sociological Game on Self-Exhibition and Social Networks. - Christophe Aguiton; Dominique Cardon; Aymeric Castelain; Pierre Fremaux; Hélène Girard; Fabien Granjon; Charles Nepote; Zbigniew Smoreda; Dilara Trupia; Cezary Ziemlicki (ICWSM, 2009)