"Web logs are not focused on the distribution of music. They are focused on the distribution of news. And they threaten the existing broadcast system in exactly the same way that Napster threatens the music industry." -- "The Internet, Broadcase Media, and Democracy"
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There is more to Napster then revenue! The web logs don't copy news because they don't have to. If they had to, then they would. Similarly, if the music industry found a way to provide your music efficiently online in an ad supported manner, then people could link this music instead of copying it... This distinction is a matter of business models and only tangental to the change that is really taking place.