Published: 08.18 Europe/London, April 15, 2011

Americans viewed 4.3 billion video ads in March, with Hulu generating the highest number of video ad impressions at more than 1.2 billion, according to figures from comScore. Time spent watching videos ads neared 1.9 billion minutes during the month, with Hulu delivering the highest duration of video ads at 520 million minutes.

Video ads reached 43% of the total US population an average of 33 times during the month. Hulu also delivered the highest frequency of video ads to its viewers, with an average of 47 over the course of the month. Huluís reach is now 8.9% of US households.

174 million US internet users watched online video content in March for an average of 14.8 hours per viewer. The total US internet audience engaged in more than 5.7 billion viewing sessions during the course of the month.

Google Sites, driven primarily by video viewing at, ranked as the top online video content property in March with 143.2 million unique viewers, followed by AOL, Inc. with 57.0 million viewers and Yahoo! Sites with 56.4 million viewers. Microsoft Sites came in fourth with 53.1 million viewers, while Vevo ranked fifth with 52.6 million viewers. is at no. 6 with 48.8 million viewers, followed by Viacom Digital 48.7 million), Turner Digital (41,7 million), NBC Universal (31 million) and at tenth place Hulu (27.6 million).

Google Sites had the highest number of viewing sessions as it neared the 2 billion mark, and highest time spent per viewer at 276 minutes, or 4.6 hours.