* Videos really do add a lot of value. But all video... makes it into a movie, despite exercises that can be done later, it is a movie experience.
* Videos create a personal touch and engagement with a user. That is valuable for a lot of people.
* Video in something technical lets others see workflow. I great example was for a beginner introduction to Spring where the instructor showed how to set getters and setters in Eclipse. Fantastic quick kill in terms of delivering something useful that wouldn't work in text.
* A lot of instructors don't like putting their face on the internet. They just don't.
* A combination of media all on one page is what I'm going for, and have mainly achieved. It does turn the page a bit long (of course assisted by sidebars) but text, video example, some interactive content, some links to resources be it citations, PDFs or other, work very well.
At least, for me.
And I'm doing this in a second language, Chinese. Nightmare, but really interesting. If you're in the LMS space and interested in getting in contact, email me at my QQ address in profile.