Podcasts - the final chapter

I can see, looking at the online education list of podcasts, that this would be an invaluable tool for universites, TAFE, distance eduction units that deal with students remotely or externally. I think the subscribing to a podcast would only be useful if you liked the program or the subject matter. You can probably tell, I'm not terribly enamoured with podcasts!!! I don't even own an i-pod!