Does your podcast NEED interaction or an email list?
Interaction often sets podcasting apart from traditional media. Podcast listeners have learned that hosts are generally responsive and feedback is often included. But do you need to interact in order to have a successful podcast?
Marketers are always talking about the importance of building your email list. Many will even cite their list (usually a very big one) as being the source for millions of dollars in sales. Do you really need an email list for you podcast?