ZenithOptimedia forecasts global ad spend to rise 3.9% in 2013

Global advertising spend will rise by 3.9 per cent to reach $518 billion during 2013, according to the latest forecast by ZenithOptimedia. Though the figure has been adjusted down from the 4.1 per cent rise predicted in December, 

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http://www.campaignlive.co.uk/news/article/1180368/zenithoptimedia-forecasts-glo...