Internet radio is on the rise.
According to market-research firms Edison Research Inc. and Arbitron Inc., more than 42 million people each week listen to radio streamed over the Internet, more than double the rate from five years ago. Of the 42 million people who listen to Internet radio, 24 million are tuning in to Web-only radio.
Yet, The Wall Street Journal points out that radio has been slowest among the media industry to turn its Internet audience into cash. Radio gets only an estimated 2.4% of its revenue from online, while TV gets 3.4% and newspapers 7%.
