I'm very impressed that YouTube has gotten to this point, but this is a great example of how the net evolves in unexpected ways.<p>Amazingly, YouTube is the number two search site after Google - <a href="http://www.tgdaily.com/content/view/39777/113/" rel="nofollow">http://www.tgdaily.com/content/view/39777/113/</a><p>7.6 billion for Google and 2.6 billion for YouTube as of last August.
I've heard of this kind of usage before, and it caught me totally by surprise. Google must be loving this. It's no longer a funny/music/weird video portal, it's now a place where people go to find information and knowledge (even more since they moved googletalks into youtube).