Persons 12+
Average Weekly Audience
June 2007
Geography: United States (50 States)

Monday-Friday
6AM-7PM
Monday-Sunday
6AM-Midnight
Cume Persons
Average Quarter-Hour Persons
Cume Persons
Average
Quarter-Hour
Persons

America Online's AOL Radio Network

950,700

287,100

1,346,100

169,200

Clear Channel Online Music and Radio

1,185,400

179,200

1,371,500

99,800

Live365

573,000

124,200

759,100

67,700

RL Select

421,100

30,100

610,800

18,100

Yahoo Music/LAUNCHcast

1,594,800

311,200

2,073,300

172,800

Total RL Radio Network*

3,539,600

752,600

4,789,300

427,800

TOTAL FIVE MEASURED NETWORKS

4,725,022

931,710

6,160,755

527,590

Note: Cume is defined as the number of different people who listen during a given daypart. Cume audience estimates for individual networks should not be added, because people who listen to more than one network will be counted twice. The reported audience for the total of the four networks is an unduplicated estimate of the number of different people who listened to one or more of the networks for a minimum of five minutes during the week.

*The Ronning Lipset Radio (RLR) Network is comprised of Yahoo Music, American Online’s AOL Radio Network, Live365 and RL Select.

The comScore Arbitron Online Radio Ratings service is based on a subset of approximately 200,000 U.S. participants within the comScore global consumer panel. Using proprietary and patent-pending technology, comScore passively and continuously captures the online behavior of these panelists, including online radio listening behavior. Subscribers receive Average Quarter-Hour and Cume audience estimates for 38 demographics and 15 standard broadcast dayparts. Each month, Arbitron publishes the average weekly audience for Persons 12+, Monday-Friday 6AM-7PM and Monday-Sunday 6AM-Midnight on its Web site www.arbitron.com.

Arbitron represents the comScore Arbitron Online Radio Ratings service.  For more information, contact Diane Williams diane.williams@arbitron.com or Bill Rose bill.rose@arbitron.com.