YouTube Top Online Video Content Viewership In US : ComScore

Online Video reached83.3% of US Internet audience last month. Digital business analytic s company ComScore has said that Google-owned YouTube topped the online video content viewership last month.
New data released from the comScore Video Matrix service showed that 176 million US Internet users watched online video content in May for an average of 15.9 hours per viewer. The audience engaged in more than 5.6 million viewing sessions in the month.
Online video reached 83.3% of the US Internet audience. The study found that Google sites, driven primarily by video viewing at YouTube.com, ranked as the top online video content property in May with 147.2 million unique viewers, followed by VEVO with 60.4 million viewers and Yahoo sites with 55.5 million viewers.
Social networking sites like Facebook came in fourth with 48.2 million viewers, while Viacom Digital ranked fifth with 46.5 million viewers, said comScore.
Google sites also had the highest number of viewing sessions with more than 2.1 billion, and highest time spent per viewer at 311 minutes, crossing the 5-hour mark for the first time.
In the online ad world, the study found that Americans viewed 4.6 billion video ads in May, with Hulu generating the highest number of video ad impressions at more than 1.3 million. Video ads reached 45% of the total US population an average of 34 times during the month.
Tremor Media Video Network ranked second overall (and highest among video ad networks) with 700.8 million ad views, followed by Adap.tv with 642 million and BrightRoll Video Network with 565 million.
Time spent watching videos ads totaled more than 2.0 billion minutes during the month, with Hulu delivered the highest frequency of video ads to its viewers with an average of 48 over the course of the month, said study.

Taken from : http://media.cbronline.com/news/youtube-tops-online-video-content-viewership-in-us-comscore-200611