In today's Media Guardian from London, Danny Meadows-Klue, CEO of the Internet Advertising Bureau in the U.K. and former chief of new media at the Daily Telegraph, writes an excellent overview of how CraigsList is savaging old media's classified advertising revenues in a "...the collision of the new economy and traditional business models."

By the way, did you know that the money being spent on Internet advertising in the United Kingdom has now surpassed that spent on radio advertising? During 2004, advertisers spent £653.3 million online, an increase of 60% over 2003.