“Internet radio will generate ad revenues of $19.7 billion in 2020, equal to those of terrestrial radio in 2006, according to a Bridge Ratings press release issued in August 2007. Bridge Ratings made the projections as part of a study comparing Internet radio adoption with HD radio. Bridge Ratings surveyed consumers ages 12 and older in June and July 2007.”

“These aggressive forecasts for Internet radio could be threatened by the ongoing dispute between record companies and Internet broadcasters over performance royalties to labels and artists for music streamed over the Web.”

“Bridge Ratings estimates that Internet radio will have 180 million listeners by 2020. Terrestrial radio will have 250 million listeners. But HD will have less than 10 million.” [eMarketer via RAIN]