In short, everything that you thought the Internet wasn't about in a world of 140 character tweets, Facebook status updates and YouTube viral video sensations. These deep and rich treasure troves of content are also gaining mainstream attention, and it all seems to be drawing more and more energy towards podcasting: a medium that many have already written off.

Podcasts enable each and every one of us to become the eclectic, program directors of our own radio stations, and best of all, it's the cheapest way to learn that you can find.