Startups Bet Audio Is the Next Frontier for Social Media

There's no shortage of smartphone apps and websites that offer ways to share your life with friends through video, pictures and text messages, but in the process, we've moved farther and farther away from what was once the central means of communicating: the sound of your own voice. Now, a couple startups are trying to change that. Dubbler, an app that quietly launched in beta on iPhone and Android in December, offers a simple way to record up to 60 seconds of audio and share them to Facebook, T...