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The explosion of all types of video content on YouTube and other sites is quickly transforming online video from a medium strictly for entertainment and news into one that is also a reference tool. As a result, video search, on YouTube and across other sites, is rapidly morphing into a new entry point into the Web, one that could rival mainstream search for many types of queries.

And now 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.

“Is YouTube the next Google?”

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