The author dropped me a note letting me know about this plugin to Bittorrent support to iTunes podcasts. This allows you to not only download torrented podcasts but to seed them as well. It is currently Windows only, but OS X support is in the plan. If you are a developer who wants to help move that along, you might should jump aboard. I've kept my support for Bittorrent mainly for political reasons. In spring of 2005, over 90% of my downloads came via the torrents. Nowadays, it's more like 5%. iTunes killed it, so it would be nice to see people be able to breathe a little life back into it.