If you need free podshow is definitely your best option. You get feeds, a commenting system, blog, and stats. Plus it's got the built-in social networking mechanism that may help you build an audience. Just go to podshow.com and create an account and show page and you're off and running. If you don't like the somewhat cluttered myspace-like appearance, then just get a cheap hosting plan with bluehost or some other place, set up a wordpress blog and use the podpress plug-in. Wordpress already supports feeds and Podpress will handle all the enclosure stuff for the feed. Wordpress and podpress are both free, and bluehost offers plans from $6.95 a month.