This content is brought to you by Audiocourses dot com

According to Arbitron Internet Broadcast Ratings MUSICMATCH Artist Match was the top Internet Broadcast Station with 1,025,612 hours of Total Time Spent Listening (TTSL) for the week of March 1.

Virgin Radio was the top commercial Internet Broadcast Station with 375,120 hours of Total Time Spent Listening, the sum total of hours tuned by listeners to a given station or network.

AOL Radio@Network and LAUNCH were the top-ranked commercial Internet Broadcasters with 6,001,034 and 4,761,826 hours of TTSL, respectively. MUSICMATCH was the top-ranked non-commercial Internet Broadcaster, with 2,508,816 hours of TTSL. The Adsertion Network was ranked as the top Internet Radio Advertising Sales Network with 899,635 TTSL.

The top Content Delivery Networks (CDN) were Live365 and StreamGuys with 2,955,042 TTSL and 612,159 TTSL, respectively. The Total Time Spent Listening for these Content Delivery Networks is the sum of all tuning to stations streamed by the CDN including commercial and non-commercial statioFs.

Internet Broadcaqters and Sales Networks Weekly Top 15 (Mar 1 – Mar 7) /p> td width="91" bgcolor="#000000">Type  

Radk	Company	CUME
1	AOL Radio@Network	commercial	6,001,034	1,495,474
2	LAUNCH	commercial	4,761,826	1,063,599
3	MUSICMATCH	non-commercial	2,508,816	577,379
4	The Adsertion Network	sales network	899,635	104,592
5<'td>	Virgin Radio	commercial	618,823	96,847
6	KEXP	non-commercial	210,717	26,040
7	KillerOldies.com	commercial	171,765	22,525
8	AcCuRadio	commercial	159094 4/tr>
9	Mak Radio	commercial	113,052	30,878
10	KPLU	non-commercial	105,717	15,002
11	Emap	commercial	94,084	40,481
12	WBUR	non-commercial	87,395	26,505
13	WOXY-FM	commercial	87,264	15,227
14	WXPN-FM	non-commercial	77,713	11,963
15	Beethoven	commercial	66,941	11,751

Arbitron Internet Broadcast Stations Weekly Top 50 (Feb 23 – Feb 29)

Notes:

1. TTSL (Total Time Spent Listening), sometimes referred to as Aggregate Tuning Hours (ATH), is the total number of hours tuned to a given station or network in the reported time period.
2. Cume Persons is an estimate of the total number of unique listeners who had one or more listening sessions lasting five minutes or longer during the reported time period. This estimate is derived using an algorithm that takes into account unique media player GUIDs, unique IP addresses and other variables during the reported time period.
3. The ratings may not reflect all tuning for the measured stations or channels since Arbitron may have received incomplete or unusable server data.
4. As Arbitron Internet Broadcast Ratings (powered by MeasureCast technology) transitions to a subscription-only service, some stations previously reported in the ratings have elected not to subscribe to the service and will no longer be included.
5. The 128K MP3 and all Ogg streams for Virgin Radio/1215 AM & 105.8 FM are not currently measured by Arbitron Internet Broadcast Ratings.
6. Due to a switch in Content Delivery Networks, tuning for The Adsertion Network is lower for the week.

About Arbitron
Arbitron Inc. (NYSE: ARB) is an international media and marketing research firm serving radio broadcasters, cable companies, advertisers, advertising agencies and outdoor advertising companies in the United States, Mexico and Europe. Arbitron’s core businesses are measuring network and local market radio audiences across the United States; surveying the retail, media and product patterns of local market consumers; and providing application software used for analyzing media audience and marketing information data. Arbitron Internet Broadcast Services measures the audiences of audio and video content on the Internet, commonly known as webcasts. The Company is developing the Portable People Meter, a new technology for radio, television and cable ratings.

Arbitron’s marketing and business units are supported by a world-renowned research and technology organization located in Columbia, Maryland. Arbitron has approximately 825 full-time employees; its executive offices are located in New York City.

Through its Scarborough Research joint venture with VNU, Inc., Arbitron also provides media and marketing research services to the broadcast television, magazine, newspaper, outdoor and online industries.