Radio might seem a bit old-school, but combine that with podcasting and you have numerous opportunities to share your expertise and get some free publicity.
Of course, using an interview to simply sell, sell, sell is bad, bad, bad. Your goal is to provide value to the people listening to your interview.
Having worked in radio for many years, I want to give you some proven tips that will help you be a success when you're interviewed.
Two sites to help you connect with people looking for guests or interview subjects are Radio Guest List (http://www.radioguestlist.com/) and Help A Reporter Out (http://www.helpareporter.com/).
(Click here to subscribe to the Increase Sales & Build Deeper Connections Podcast on iTunes.)