Is online advertising making headway at the expense of web-user privacy? We talk to consumers who object to their web-use enabling online advertisers to target them directly. Brian O'Kelley is the CEO and Co-founder of AppNexus tells us about the news ways in which online advertising operates, using your personal information. And Moray MacLennan Worldwide CEO at M&C Saatchi explains the 'science' behind direct targeting using detailed data available about you, via your computer, tablet and phone. Plus we hear from Miles Young, CEO of Ogilvy & Mather Worldwide.