comScore released its comScore Video Metrix report for September 2007, revealing that nearly 75 percent of U.S. Internet users watched a video online (including both streaming video and progressive downloads), averaging three hours of video per person during the month. Google Sites, which includes YouTube.com, topped the September rankings with both the most unique video viewers and most videos viewed.

September saw Americans view more than 9 billion videos online, with Google Sites once again ranking as the top U.S. video property with 2.6 billion videos viewed (28.3 percent share of videos), 2.5 billion of which occurred at YouTube.com (27.6 percent). Fox Interactive Media ranked second with 387 million (4.2 percent), followed by Yahoo! Sites with 381 million (4.1 percent) and Viacom Digital with 304 million (3.3 percent).

In total, nearly 136 million Americans, or approximately three in four U.S Internet users, viewed online video in September. Google Sites also captured the largest online video audience with 71.6 million unique viewers, followed by Fox Interactive Media with 41.2 million and Yahoo! Sites with 39.6 million.

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