“…Many subsequent studies have examined the public good aspect of P2P networks. 5 In particular, Krishnan, Smith, Tang, and Telang (2004), Antoniadis, Courcoubetis, and Mason (2004), and Antoniadis, Courcoubetis, and Strulo (2005) find that the equilibrium level of sharing is below the social optimum and propose variations of soft incentive schemes to reduce free-riding. Other papers that study soft incentive schemes include Buragohain, Agrawal, and Suri (2003), Kamvar, Schlosser, and GarciaMolina (2003), Habib andChuang (2006), Feldman, Papadimitriou, Chuang, andStoica (2006), and Van der Schaar and Turaga (2008).…”