Speaker: Christopher S. Penn, The Financial Aid Podcast and the Student Loan Network
You can check out the presentation here Podcast Marketing
The one theme that seems to be recurring through his presentation is ubiquity. Be at all places at all times with your podcast (and with all your media efforts for that matter)
A little tidbit for all the SEO geek's out there: Did you know: .EDU and .GOV domains are seen as more relevant to search engines so, if you do not have one of those domains make sure that people who do are linking to you