For more than 50 years, Arbitron has been in the audience ratings business and in 1999 was the first company to begin measuring radio and video broadcasts over the Internet.
The comScore Arbitron Online Radio Ratings service ranks the participating online radio networks and publishes Average Quarter-Hour (AQH) and Cume for Persons 12+ listening, Monday through Sunday 6AM to 12Mid. The rankings are updated each month and reflect the turning for an average week during the survey period.
September 2008: comScore Arbitron Rated Online Radio Networks 11.19.08
August 2008: comScore Arbitron Rated Online Radio Networks 11.19.08
JULY 2008: comScore Arbitron Rated Online Radio Networks 9.30.08
JUNE 2008: comScore Arbitron Rated Online Radio Networks 8.8.08
MAY 2008: comScore Arbitron Rated Online Radio Networks 7.16.08
APRIL 2008: comScore Arbitron Rated Online Radio Networks 7.16.08
MARCH 2008: comScore Arbitron Rated Online Radio Networks 5.27.08
FEBRUARY 2008: comScore Arbitron Rated Online Radio Networks 4.9.08
JANUARY 2008: comScore Arbitron Rated Online Radio Networks 4.9.08
DECEMBER 2007: comScore Arbitron Rated Online Radio Networks 2.15.08
NOVEMBER 2007: comScore Arbitron Rated Online Radio Networks 1.31.08
OCTOBER 2007: comScore Arbitron Rated Online Radio Networks 12.13.07
SEPTEMBER 2007: comScore Arbitron Rated Online Radio Networks 12.13.07
AUGUST 2007: comScore Arbitron Rated Online Radio Networks 10.30.07
JULY 2007: comScore Arbitron Rated Online Radio Networks 10.02.07
JUNE 2007: comScore Arbitron Rated Online Radio Networks 09.07.07
MAY 2007: comScore Arbitron Rated Online Radio Networks 07.20.07
APRIL 2007: comScore Arbitron Rated Online Radio Networks 06.12.07
MARCH 2007: comScore Arbitron Rated Online Radio Networks 05.14.07
FEBRUARY 2007: comScore Arbitron Rated Online Radio Networks 05.14.07
JANUARY 2007: RL Select Debuts in comScore Arbitron Online Radio Ratings 03.28.07
DECEMBER 2006: comScore Arbitron Rated Online Radio Networks 03.28.07
NOVEMBER 2006: comScore Arbitron Rated Online Radio Networks 02.09.07
OCTOBER 2006: comScore Arbitron Rated Online Radio Networks 02.09.07
SEPTEMBER 2006: comScore Arbitron Rated Online Radio Networks 12.05.06
AUGUST 2006: comScore Arbitron Rated Online Radio Networks 10.16.06
JULY 2006: comScore Arbitron Rated Online Radio Networks 10.16.06
JUNE 2006: Weekday Audience for Online Radio Networks Grew by 38% Between June 2005 and 2006 09.20.06
MAY 2006: comScore Arbitron Rated Online Radio Networks 09.19.06
APRIL 2006: comScore Arbitron Rated Online Radio Networks 07.12.06
MARCH 2006: comScore Arbitron Rated Online Radio Networks 05.25.06
FEBRUARY 2006: comScore Arbitron Rated Online Radio Networks 04.20.06
JANUARY 2006: ESPNRadio.com Sports Programming Attracts Over 72,000 Listeners Online Per Week According to comScore Arbitron Ratings 04.03.06
DECEMBER 2005: Over Seven Million People Tuned To Online Radio Networks Measured by comScore Arbitron In December 2005 02.24.06
NOVEMBER 2005: comScore Arbitron Rated Online Radio Networks 02.03.06
First Full Year of comScore Arbitron Online Radio Ratings Shows a 177% Increase in Weekday Average Quarter Hour Audience for Measured Networks 01.31.06
SEPTEMBER 2005: Online Radio Networks Reached More Than Two Million People In Morning Drive 11.17.05
AUGUST 2005: comScore Arbitron Rated Online Radio Networks 11.17.05
JULY 2005: Measured Online Radio Networks Reach 6.8 Million Listeners per Week according to comScore Arbitron Ratings 09.09.05
JUNE 2005: Clear Channel Online Music and Radio Network Reaches Over 850,000 Listeners Per Week According to comScore Arbitron Ratings 08.16.05
MAY 2005: comScore Arbitron Rated Online Radio Networks 08.16.05
APRIL 2005: Persons 25-54 Account for More Than Two-thirds of Online Listening According to the Latest comScore Arbitron Rated Online Radio Networks 06.13.05
MARCH 2005: Midday Average Quarter-Hour Audience Tops One Million for comScore Arbitron Rated Online Radio Networks 05.11.05
FEBRUARY 2005: Online Radio Networks Rated by Arbitron and comScore Score Big in Midday with Persons 25-54 04.14.05
JANUARY 2005: Newly Measured Live365 Reaches More Than 400,000 People Per Week in January According to comScore Arbitron Online Radio Ratings 03.08.05
DECEMBER 2004: comScore/Arbitron-Rated Online Radio Networks Approach Five Million Listeners Per Week In December 2004 In midday more than 650,000 people listen during an Average Quarter-Hour to America Online's AOL® Radio Network, Yahoo!®’s LAUNCHcast, Microsoft’s MSN Radio and WindowsMedia.com 02.03.05
NOVEMBER 2004: Listening to AOL, Yahoo! and Microsoft Online Radio Networks Increases by Five Percent in November According to comScore/Arbitron Ratings America Online's AOL® Radio Network, Yahoo!®'s LAUNCHcast and Microsoft's MSN Radio/WindowsMedia.com have more than 4.2 million listeners per week 01.10.05
OCTOBER 2004: 4.1 Million People a Week Listen to Three Major Online Radio Networks According to comScore Arbitron Online Radio Ratings New Online Radio Ratings Service Includes Audience Estimates for an Average Week in October 2004 For America Online's AOL® Radio Network; Yahoo!®'s LAUNCHcast; and Microsoft's MSN Radio and Windowsmedia.com 12.06.04
