Xu, Jie; van der Schaar, Mihaela; Zame, William - Istituto Einaudi per l'Economia e la Finanza (EIEF) - 2013
In many online systems, individuals provide services for each other; the recipient of the service obtains a benefit but the provider of the service incurs a cost. If benefit exceeds cost, provision of the service increases social welfare and should therefore be encouraged but the individuals...
