ComScore has released January 2009 data from the comScore Video Metrix service indicating that U.S. Internet users watched 14.8 billion online videos during the month, which represents an increase of 4% as compared to December 2008.

YouTube topped the growth charge with 91% of the incremental gain in the number of videos viewed against December, as it exceeded 100 million viewers for the first time.

In January 2009, Google Sites once again rated as the top U.S. video property with 6.4 billion videos viewed (43% online video market share), with YouTube.com with over 99% of all videos viewed at the property.

Fox Interactive Media placed on second position with 552 million videos (3.7%), followed by Yahoo! Sites with 374 million (2.5%) and Viacom Digital with 288 million (1.9%).

Moreover, Megavideo surged 15% (103 million videos) in January 2009 to capture a spot in the top ten for the first time.  

Over 147 million U.S. Internet users viewed an average of 101 videos per viewer in January. Google Sites sprang up to 102 million online video viewers in the month, or over two out of every three Internet users who saw video.

Fox Interactive placed second with 62.1 million viewers, followed by Yahoo! Sites (41.9 million) and Microsoft Sites (30.0 million).

Other noteworthy results from January 2009 comprise:

- 76.8% of the total U.S. Internet audience viewed online video.
- The average online video viewer watched 356 minutes of video (approximately 6 hours), up 15 percent versus December.
- 100.9 million viewers watched 6.3 billion videos on YouTube.com (62.6 videos per viewer).
- 54.1 million viewers watched 473 million videos on MySpace.com (8.7 videos per viewer).
- The duration of the average online video was 3.5 minutes, up from 3.2 minutes per video in December.
- The duration of the average online video viewed at Megavideo was 24.9 minutes, higher than any other video property in the top ten.