On April 29, an expected 2 billion people will get online to watch Prince William and Kate Middleton get married. There will be an integrated Twitter feed and live blog running next to the video stream - the first time that's happened on YouTube. YouTube will also have a "Wedding Book" section where you can upload a video to give your congrats to the newlyweds. Hope the royal family has something planned that can top Jill and Kevin's wedding entrance dance.

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