Undaunted by the flurry of speculation surrounding Microsoft’s efforts to acquire the company, Yahoo today announced oneConnect, a new mobile communications application that aims to make the mobile address book the center of all mobile messaging, social networking, and mobile media sharing. Built using an open architecture, Yahoo oneConnect will embrace messaging and sharing tools from other platforms—including things like Google Talk and AIM—and the company even plans to develop versions for Apple’s iPhone and RIM’s BlackBerry platform.