YouTube: The Reference Tool

". . .YouTube, conceived as a video hosting and sharing site, has become a bona fide search tool. Searches on it in the United States recently edged out those on Yahoo, which had long been the No. 2 search engine, behind Google. (Google, incidentally, owns YouTube.) In November, Americans conducted nearly 2.8 billion searches on YouTube, about 200 million more than on Yahoo, according to comScore."