Podcasting is a marketing channel in itself. When you create a new show and provide the RSS feed to iTunes, you should appear in the iTunes New and Noteworthy section. This is like the front page of the podcast world and may be the most exposure you’ll ever receive for your show.
This article describes how to use a free program to automatically post your new blog posts to Twitter and Linkedin (note: The program I describe here will also auto-post to Facebook as well, but I haven’t tested that function). Here are the steps!