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Advertising's 'most hated man' is back with a new warning for CMOs | Collector
Advertising's 'most hated man' is back with a new warning for CMOs
Business Insider

Advertising's 'most hated man' is back with a new warning for CMOs

Jon Mandel, who set off a firestorm in 2016 with a presentation about alleged agency kickbacks, has beef with principal media trading.

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