Its easy to think you know everything about how something works after using for years and years... but really take a minute to read this document
http://www.youtube.com/creators/playbook.html
This alone tells you exactly what is and is not going to work if you are trying to use YouTube to gain better SEO for your brand, your assets or services you market or the story you want to tell.
Also be reading this guy with his first post on Search Engine Watch
Terry Van Horne, November 4, 2011
Video SEO: Video Metadata Optimization
