New York - Viacom's (NYSE: VIA) MTV Networks said on Wednesday that it has partnered with mobile social networking firm Intercasting, to develop a mobile social network around MTV Tr3s, the company's Latino youth channel. The Con3xion mobile social network will allow users to view photos, send and receive messages, post comments,  and search profiles on their phones. MTV said that Con3xion will be expanded to the Web in the near future, and that it plans to work with Intercasting to develop mobile social networks for other MTV properties.