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Google has already started to index YouTube videos on Google Video, meaning that searches on the site serve up thumbnails of YouTube clips linking to the video over on YouTube. Google say the plan is to search all sites, not just YouTube: in short, Google Video is becoming a video search engine similar to Google Image Search. That also pits it against rivals like PureVideo , Pixsy, Yahoo Video (which offers web-wide search), Dabble and Blinkx.