I can respond only by saying that initially it has to be brought to our attention. I'm beyond grade 4 by several years, and I don't watch YouTube as regularly as those in grade 4 might, nor do my staff. But when it's brought to our attention and we've satisfied ourselves that it's a breach of copyright, which typically it would be, we contact YouTube, and YouTube removes it.
On February 26th, 2009. See this statement in context.