Creative Commons have put up a rather interesting Podcasting Legal Guide, with foreword and introduction by Lawrence Lessing. Among other things it gives a short but clear description of "fair use", including podcast related examples.
It is hosted as a read-only wiki, and in a pdf document for easier printing and sharing offline.
And, for the geek in us, there is a link to information on doing enhanced podcasts - not only for iTunes, but also for Windows Media with some scripting. Shame that this brings us back to the browser and standard wars, with several formats competing for attention. But, some years down the line it might be just as easy to do it with effectient video files using still images for large parts of the content... stay tuned.
