Why Google and Facebook should heed Unilever’s warnings

It is starting to feel like there is something in the water at the IAB’s annual leadership conference. Last year, Procter & Gamble’s chief brand officer Marc Pritchard issued an ultimatum about the need to clean up the “murky” digital media supply chain through greater transparency; now Unilever’s marketing chief Keith Weed is demanding digital platforms win back consumer trust or risk losing its ad dollars.
This is not the first time Unilever has called out dig