Here are a few thing to consider before you start:
People will remember:
- 10% of what they read
- 20% of what they hear
- 50% of what they see and hear
(Link: Is Web video really effective?)
I’m not sure about the accuracy of those numbers, but here is another thing to consider: who is producing the content? Video takes a lot longer to produce than audio, and there are a lot more variables to video capture (like what’s in the background, natural lighting, audio, etc.)
An audio podcast — providing there is good audio capturing technique — is relatively easy to produce on a regular basis. Using a good digital recorder and mic, you can capture audio relatively quickly, download it to a laptop, edit it using various audio software, export it as a MP3 file and upload it to a Web server for online distribution.
Coffeehouse Junkie 