Personally, I wasn't that impressed with this article, though it has attracted a lot of positive commentary in the e-learning blogosphere. The author focuses almost exclusively on podcasting as offered through iTunes. And while some engaging (and very large) screen shots are offered, this article will not tell you how to podcast. What readers will like is a good list of reasons why podcasting succeeds in e-learning, some discussion of podcast search engines, and examples of podcasting in business. But it has all been done before, and not in annoying PDF either. The direct link is very unreliable (it keeps sending authorization errors) so I have linked to the web page; you'll find the PDF under the little picture to the right or under the 'attachments' (instead of the more proper 'enclosures') heading.