Data from the comScore Video Metrix service indicates that 183 million U.S. Internet users watched online video content in November for an average of 20.5 hours per viewer. The total U.S. Internet audience viewed 40.9 billion videos.Google Sites, driven primarily by video viewing at YouTube.com, ranked as the top online video content property in November with 151.6 million unique viewers, while VEVO ranked second with 55.4 million. Facebook.com ranked third with 50.8 million viewers, followed by Yahoo! Sites with 50.4 million and Viacom Digital with 47.4 million. More than 40 billion videos views occurred during the month, with Google Sites generating the highest number at 20.5 billion. The average viewer watched 20.5 hours of online video content, with Google Sites (7.4 hours) and Hulu (3.3 hours) demonstrating the highest engagement among the top 10 properties.