According to a report by ZenithOptimedia, online advertisement spending will overtake radio in 2008.

ZenithOptimedia, a media planning and buying firm, said it expects the Internet to account for 8 percent of the world’s total advertising spending in 2008, compared with 7.9 percent for radio.

Ad spending on the Web is expected to grow six times faster than traditional media between 2006 and 2009. ZenithOptimedia said apart from the Internet, only cinema and outdoor advertising are expected to grow faster than the market to 2009.

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I wonder what percentage is Google AdWords / AdSense? Whatever it is, it’s too high…