http://paidcontent.org/2008/03/31/419-zenithoptimedia-upgrades-online-ad-spend-to-234-percent-in-08/ The economics of digital content Thu, 23 May 2013 10:45:52 +0000 hourly 1 http://wordpress.com/ http://paidcontent.org/2008/03/31/419-zenithoptimedia-upgrades-online-ad-spend-to-234-percent-in-08/#comment-58990 Mon, 31 Mar 2008 12:44:12 +0000 http://paidcontent.wp.gostage.it/2008/03/31/419-zenithoptimedia-upgrades-online-ad-spend-to-234-percent-in-08/#comment-58990 I think (99.9% sure) that 47.5 billions is worldwide market not US only as stated
didier

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