ComScore Metrics, circa 2008

• 185 million U.S. people age 2+ online in a month, spending an average of 29 hours online per person*
• 80% of 824 million global Internet users now outside of U.S.
• 99% of online population search in a month, conducting 22 searches per searcher**
• 75% of online population stream a video, viewing an average of 70 videos per viewer per month***
• Up 36% vs YA
• 66% of online population visit a social networking site, spending 4 hours per month per visitor*
• 40% of online population visit a blog site in a month*

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Number of Online Videos Viewed in the U.S. Jumps 13 Percent in March to 11.5 Billion

Nearly 139 million U.S. Internet users watched an average of 83 videos per viewer in March. Google Sites also attracted the most viewers (85.7 million), where they watched an average of 51 videos per person. Fox Interactive attracted the second most viewers (54.3 million), followed by Yahoo! Sites (37.5 million) and Viacom Digital (26.6 million).

Other notable findings from March 2008 include:

• 73.7 percent of the total U.S. Internet audience viewed online video.
• 84.8 million viewers watched 4.3 billion videos on YouTube.com (50.4 videos per viewer).
• 47.7 million viewers watched 400 million videos on MySpace.com (8.4 videos per viewer).
• The average online video duration was 2.8 minutes.
• The average online video viewer watched 235 minutes of video.

Number of Online Videos Viewed in the U.S. Jumps 13 Percent in March to 11.5 Billion

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Agencies Know the Score on Web Tracking - WSJ.com

A discrepancy between Google click data and comScore's estimates of those data before they were released caused the Web-measurement firm's share price to plunge last week. But on Madison Avenue, the difference wasn't much of a shock. Rather, it was another reminder that the science of tracking Internet usage is still far from perfect.

Digital-advertising executives say they have long taken comScore numbers with a grain of salt and don't plan on curtailing their use of the Reston, Va., research firm because of the Google flap. "We have not expected the numbers to be 100% accurate," says Sarah Fay, chief executive of both Carat and Isobar US, ad companies owned by Aegis Group. "I think that comScore has been as good as anything we've had previously."

Agencies Know the Score on Web Tracking - WSJ.com

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