YouTube.com accounted for one-third of the 9.8 billion videos viewed online in the US during the month, according to new research.

The total number of videos viewed in January was down slightly from the more than 10.1 billion viewed during a record-breaking December 2007, according to new data comScore.

The market watcher noted that Google Sites once again ranked as the top US video property in January with nearly 3.4 billion videos viewed (34.3 per cent share of videos), gaining 1.7 share points versus the previous month. YouTube.com was found to have accounted for more than 96 per cent of all videos viewed at the property.

Fox Interactive Media ranked second with 584 million (6 per cent), followed by Yahoo Sites with 315 million (3.2 per cent) and Microsoft Sites with 199 million (2 per cent).

More than 139 million US internet users spent an average of 206 minutes per person viewing online video in January. Google Sites also attracted the most viewers (80 million), where they spent an average of 110 minutes watching video. Fox Interactive attracted the second most viewers (53.9 million), followed by Yahoo Sites (36.3 million) and AOL LLC (21.9 million).