Oakland, CA - May 16, 2012 - Triton Digital will measure Pandora's audience size and reach nationally and in local markets with Triton Webcast Metrics Local, a market-specific version of Triton's national Webcast Metrics audience measurement platform.

The March 2012 Triton Internet Audio Top 20 Ranker, measured by the MRC-accredited Webcast Metrics, reveals that Pandora has more than a 71 percent share of internet radio listening among the top 20 stations and networks in the U.S. For the first time, Triton now translates this audience data into traditional radio metrics such as Average Quarter Hour (AQH) and cumulative audience (cume) at the national and local level.

The national results for March 2012 show that among adults 18-49 Pandora has a weekly cume of 23,874,175, which is equivalent to a cume rating of 17.8 and, when compared to radio networks in Arbitron's March 2012 Radar 112 report, makes Pandora the largest adult 18-49 radio network in the U.S. The first Triton Webcast Metrics Local report for March 2012 showcases Pandora's significant presence in the top local radio markets, based on listener data from March 1, 2012, through March 28, 2012, for key radio-buying demographics, including adults 18-34, 18-49 and 25-54.