MBA806 Q&A Weekends: How important is it to have an audience prior to launching your podcast show?

It's time for another round of listener Q&A, and this time we've got a tough one! Podcasting is one of the best kinds of content marketing. But is it the "front line" of a great marketing strategy, or is it the result of one? Which comes first, the chicken of a large audience, or the egg of a great podcast? If you build it, will they come? Should they come while you're building it?