4.1 Million People A Week Listen To Three Major Online Radio Networks

4.1 Million People A Week Listen To Three Major Online Radio Networks

Arbitron Inc. and comScore Media Metrix, released the first audience ratings from their new online radio ratings service - with an estimate of 4.1 million people a week, age 12 and older, listening to three major online radio networks. The Online Radio Ratings service rated the three charter subscribers - America Online's AOL® Radio Network; Yahoo!®'s LAUNCHcast,; and Microsoft's MSN Radio and WindowsMedia.com - during an average broadcast week in the month of October.

The new ratings report also estimates that 334,800 people age 12 and older listened during an Average Quarter Hour (AQH) to the online radio services of the three charter subscribers, Monday-Friday, 6AM-7PM during an average broadcast week in October.

Arbitron and comScore Media Metrix recently announced their collaboration on a new service that provides online radio with traditional broadcast ratings including Cume and Average Quarter Hour estimates for standard dayparts and demographics. Cume is the total number of different persons who tune to a radio station during the course of a daypart for at least five minutes. Average Quarter Hour is the average number of persons listening to a particular station for at least five minutes during a 15-minute period.

"Ad agencies need credible numbers to justify making online radio part of their media plans," said Eric Ronning, managing partner, Ronning Lipset Radio.

"These results help us validate the size and value of online radio for advertisers on a level playing field with traditional radio," said Andy Lipset, managing partner, Ronning Lipset Radio. "Online radio must use the same metrics used by terrestrial radio to be included in traditional media plans."

Persons 12+ Average Weekly Audience October 2004 United States

Mon-Fri 6AM-7PM Mon-Sun 6AM-Midnight
Cume Pers Avg QtrHr Pers Cume Pers Avg QtrHr Pers
Yahoo!'s LAUNCHcast 1,073,600 194,100 1,928,900 128,900
AOL Radio Network 876,600 107,900 1,783,900 81,700
MSN Radio and WindowsMedia.com 300,900 32,700 424,700 20,400
TOTAL: All Three Networks 2,202,800 334,800 4,067,400 231,000

Source: comScore Arbitron
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