On September 15, 2010, four students from New York University announced the source code for a new international social network, which they named Diaspora. They regard it as an anti-Facebook social network: whereas Facebook is an entirely centered network that users cannot really modify and appropriate because of strict control by the site owners, the Diaspora social network is supposed to be more democratic and more open, and to function as a truly multipolar network in which no real center is visible. Its users become actors and contribute to the evolution of the network.      Keywords:    diaspora,  cultural diversity,  cross-cultural,  economics,  colonialism,  slavery,  labor supply