Internet users watched videos online. According to comScore’s latest report , Americans viewed more than 11.4 billion videos for a total duration of 558 million hours during the month.

Other statistics from comScore’s report include:

- The average online video viewer watched 235 minutes of video.

- 91 million online Americans watched 5 billion videos on YouTube.com (54.8 videos per viewer).

- 51.4 million online Americans watched 400 million videos on MySpace.com (7.8 videos per viewer).

- The duration of the average online video was 2.9 minutes.

Despite the increased numbers of Internet users viewing online video, just 21% of streams are monetized. “As a result of the opportunity, online video ad spending is forecast to grow 55% in 2009 vs 2008 to almost a billion dollars,” predicts online video ad network, LiveRail .

Tags: billion dollars, comscore, duration, internet users, online video, statistics, streams, video advertising, video viewer