The problem with podcasting...
...is that not all that many people want to listen to them. And even if they do listen, most will only tune in once.
Why am I not surprised? Besides, there's another drawback to podcasting: Life's too bloody short. Who's got time to listen to various know-it-alls nattering on for half an hour? Blogging is better because you can skim a blog in a minute or so, get the gist, and move on. With a podcast, you actually have to pay attention for an extended period to get any benefit. It's like a step backward to the age of oral tradition. What's the point?