Podcasting has taken over because people can listen to what they want, when they want, wherever they want. In the car, working out, and even at work, people are listening to podcasts.
As a business, podcasting offers a unique opportunity to build your brand, to improve employee morale, and to let people see the human side of your business, much more so than a 30-second ad or a blog post can.
And podcasts are always there. Anyone at any time can listen to episode 1 or episode 101 of your podcast.