Business Insider global advertising editor Lara O'Reilly joins the Echo Chamber to discuss how ad blocking software is forcing digital media companies to rethink their advertising models. In conversation with Arun Sudhaman, O'Reilly also explores the restructuring at Publicis and Omnicom, the 'mediapalooza' agency reviews, and the impact of new social media platforms like Facebook Instant Articles and Snapchat Discover on digital publishers.
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