Listening to online radio is becoming increasingly popular, especially among users who access the Internet via high-speed broadband connections. Clear Channel Communications, one of the largest radio broadcasting networks, is streaming more than 600 of its stations' music and concerts over the Web. Its stations' Web sites also provide thousands of archived music videos, as well as personal interviews with various musicians and artists. Clear Channel also owns Premiere Radio, a nationally syndicated station that broadcasts and streams talk shows and musical performances both over traditional airwaves and the Internet. Many traditional radio broadcasters are streaming music online because advertising revenues have dropped off for broadcast radio due to so many consumers spending their spare time talking on mobile phones or accessing the Internet. Evan Harrison of Clear Channel is spending much time trying to convince advertisers that online radio is as lucrative a market as traditional broadcast radio. In the past year alone, Clear Channel Web sites have experienced a 30-percent increase in advertising revenue. Although only $100 million to $200 million is spent annually on online radio advertising, this figure is expected to increase significantly in the near future. Besides bringing in advertising revenue, Clear Channel Web sites earn small commissions for steering music listeners to Amazon, where they can buy the songs they just heard.