There are (at present) 16 head categories and 56 subcategories recognized by the Apple iTunes podcast directory, and similar numbers for Google Play’s library. Within them, there are virtually hundreds of thousands of podcasts to explore and listen to, nearly 30% of which continue to publish new content on a monthly or even weekly basis. We don’t want to bog everything down with the math, here, but assuming each cast varies in length from 25-minute explanations of recent behavioral research studies (see NPR’s “Hidden Brain”), to hour-plus analyses of each individual minute of a single film (such as the “Back to the Future Minute”), you could safely estimate that at any given hour, there is more audio content than can be listened to in an entire year. It takes a very special sort of person — some may say, a special flavor of crazy — who chooses not only to enter this sea of sound as a listener, but as a creator and contributor. Well, challenge accepted! Today, joined by fellow podcaster Haley Malle (of Gallifrey Public Radio, Legends of SHIELD, and numerous other Gonna Geek podcasts), we’re looking at the idea of podcasting as an activity, perhaps hobby, perhaps profession, and the rise of this form of distributing entertainment, news, and information over the past ten years that has earned the buzz phrase of “disruptive technology”, now rivaling broadcast and satellite radio in more demographics and regions of the world as you may imagine. Sure, you can still enjoy a good oldey-timey radio show, complete with sound foley, musical interludes, and even commercial product endorsement, but the actual radio itself is now not only optional, it teeters on obsolete.