Aaron Wall of SEO Book (you likely know of Aaron if you have done anything in search engine optimization" has done a special guest post on blog with some excellent tips about using video SEO.
"Six more bonus video optimization tips:
- When in doubt, shorter with better clarity is typically better than comprehensive. And slower / calmer voice is better than quick speaking.
- Annunciation matters. If you have trouble speaking clearly for long periods of time practice, and then record in smaller chunks.
Buy a nice microphone with a pop filter. It is worth it. It makes everything you say more clear.
- If you post to your site and YouTube try to use a different title on your blog such that you can try to rank for a wider net of keywords.
- If you have the time to it may be worth submitting to Google Video, MetaCafe, and a couple of the other video sites. Some of them pass link weight and many of them have good authority."