MoPub is a start up that will benefit mobile publishers and eMarketers when it comes to managing ad inventory, maximizing sales and performance. MoPub can provide a great booster for the advertising business of Twitter in mobile. There is news that the social network has acquired MoPub for $350 million in stock. Moreover, Twitter has bid for MoPub and won out over other network bidders like Milennial Media. As the exclusive customer of MoPub, the strategy of Twitter remains to be a mystery. There are speculations that Twitter may branch out its own social graph on other sites and to their other clients.