Is podcasting the new blogging? Have we reached "peak pod?" If so, who cares? The podcast industry is booming and shows no sign of slowing down anytime soon. Here's how rural entrepreneurs can tap into podcasting - as a business, a marketing channel for your business, or an advertising opportunity.  Meet Laura Krantz of the Wild Thing podcast, Kristin Carpenter of Verde Brand Communications and the Channel Mastery podcast, and Curt Linville of PodDivvy.