I am reading through the hot new seller Naked Conversations by Robert Scoble and Shel Israel. While I understand that it takes a couple of years to put a book together (at least) they didn't mention anything about audio or video blogs....just written ones.
I am curious if audio blogs will be more or less effective than written. My guess, those who can do them with great quality and follow the other rules brought up by Robert and Shel will be very successful. By great quality I mean no droning voice, proper inflection in the voice, no stuttering, and keep it short. Nothing longer than 10 minutes (maybe 15 if you have something really interesting). Need an example, take a look here.