I love CNN.com but I've quit clicking on any article with video, because it's largely what you describe: a talking head telling me very little. I'd much rather have an article that I can scan and which inevitably gives me more detail.
When it comes to learning, video "textbooks" have enormous potential. That doesn't mean I want my fiction texts to become multimedia extravanganzas, and I don't want them distracting me with a bunch of extraneous crap. But again, for the zillionth time, it doesn't have to be one or the other! We can have both!
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