Is podcasting a good medium for learning?

It has been a very long time now that I blogged. Well, I have a lot of wrong reasons for that :-). These days I've been into podcasting. I have registered for a personal podcasting station with switch pod. Uploaded a couple of episodes as well.
Now that has really made me think of podcasting as a serious medium to deliver learning content. Especially when I know that most of those employed in my organization use iPods or simple mp3 players.
Many of us in my organization travel. When I say travel, they do close to two to three hours of travel every day! Now that is a lot of time. If we can tap that time to get some relevant content delivered right up to their eardrums, I would call it e-learning evangelism.
I've been asking myself this question; is podcasting a good medium to deliver learning content? Why not? Afterall, listening to FM radio programs is becoming a fad in the country I live. So audio medium cannot be branded as obsolete!
However, the success factor is in what we deliver, how we deliver and in what quantity we deliver. I've been studying the possibilities of unleashing the potential that podcasting has in it as a learning medium. I will try to document my findings here in the next few posts.