I call it the coming of 'WikiTVia;' the tipping point where we view and listen to wikipedia. This will engage, persuade, educate and entertain audiences the way reading can never do (however many links you have).
Jakob Nielsen and his team, as well as academics, are stripping the blogosphere bare to understand how it works.
Birds of a Feather: How personality influences blog writing and reading.
It ain't like you imagine.
Those who generate content are a fraction of total users, 1% is the figure Nielsen gives. This 1% generate content beyond the ken of lesser mortals; you may say they are obsessive about it. Nielsen cites the Amazon book reviewer who wrote 1,275 reviews in one year (is that all). I liken these people to what advertisers call 'champions.' The key influencers of a cohort or group, early adopters, who innovate first and do so with conviction and passion.
Nielsen eleaborates on this and calls it 90-9-1.
Taking this into the realm of video my intuition supposes that these 'Golden Boys & Girls' of content generation will be and are the same people who will have a Flip camera in their pocket (or simply use their phone) to capture or generate orignial content then upload. Content generated on a theme, from a premise, that has some link or basis in its text form will generate an explosive interest in the subject matter beyond its original audience. Video has this power to engage, to persuade, to intrigue and interest the viewer.
Rich content enriches minds.
Like DJs they have a following.
Though the content should be king, not its author.
I'm this 1%.