Jonathan Barnard graduated from Cambridge University in the UK in 1995 and has been working at ZenithOptimedia (www.zenithoptimedia.com; @ZenithOptimedia; Facebook) ever since. He specialises in analysing advertising and media trends, and is now ZenithOptimedia's global head of forecasting. He is based in London. Email Jon at moc.aidemitpohtinez@dranraB.nahtanoJ and follow @JonBarnard on Twitter.