You can imagine many uses for podcasts if you try: company during commutes (my own favorite), occupation of the mind during chiefly physical tasks such as washing dishes, even (apologies to many authors) insomnia treatments.
Here’s one I hadn’t considered.
Martyn Casserly is a freelance journalist, musician, and new-media observer living in London; I’m also following him on Twitter. Here‘s how he discovered a benefit of podcast fiction in dealing with a medical problem.