An audible version of Twitter! MotorMouth by Dan Jacoby is a neat little free app that runs on iPhone, iPod Touch, and iPad. What is it, you ask? The name does sound kind of odd, but at the end of the day, this app lets you connect with others around you to hear about what they are doing, where they are, and what may be happening around them. If you really want to stretch it a bit, you could consider …