With so many Windows Live betas all running simultaneously, who can keep up? We're trying. It looks like the Softies have refreshed the Windows Live Messenger beta, based on some new Live Messenger screen shots posted on ActiveWin. Meanwhile, the Windows Live Mail team has launched a new support blog. Finally, Microsoft on Monday bought MotionBridge, a mobile search-tool maker, and is planning to integrate its technology into some of its future Windows Live services, company officials said. (We're figuring MotionBridge will fit most closely with Windows Live Search for Mobile devices, which is currently in beta.)