Image courtesy BarCamp AustinIf the phrase "tech conference" conjures up images of PowerPoint slides, droning presenters, and dreary snacks, then BarCamp Austin feels your pain. BarCamp Austin is an "unconference" -- an event that flips the traditional meeting setup on its head. Everything in an unconference is planned, set up, and executed by the participants. If it sounds like a model for chaos, it turns out it's just the opposite. "People always want to ask......