This happens every time. As soon as I finish a 'Viral Community News', I see some great stuff that should have been included.
Asi just emailed me about an interesting study he did of the 100 most popular videos on YouTube. He does a nice breakdown of how many were UGC(User-Generated Content), and how many were commercially-created, and he then further breaks down each category into specific type. The UGC category was still the clear leader, with Asi putting 58 out of 100 videos in this category.
Very interesting marketing information here. Give it a look.