You’ll want to reach as many Internet media resources as possible. Creating a Podcasts where you have audio contact will make you more accessible to your fans. It puts your name, your book name and your concepts out on the Internet in more places. That is one of the many methods to gain you more exposure.
I was searching to see what new PR sites were out there for my book and found two or three of my podcasts that I did were showing up on six to ten separate websites. It offers some great exposure for you as an author.