Mobile Instant Messaging users are expected to exceed 1.3 billion worldwide by 2016, tripling 2010 totals, according to a new forecast published by Juniper Research. The research firm believes that growth will be triggered by the arrival of new services, such as Apple's iMessage, and continued expansion of existing services, such as AOL's AIM, Research In Motion's BlackBerry Messenger, Microsoft's Windows Live, Skype and Yahoo! Messenger. Despite surging interest in mobile IM and some onlookers predicting new services like iMessage will spell the demise of traditional text messaging, Juniper said SMS will remain the primary vehicle for text-based interaction on mobile devices. Release