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4 papers in the last four weeks, against 1 the four weeks before. 0.0% of all new papers.

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Influencer Cartels
May 16, 2024Marit Hinnosaar, Toomas HinnosaarOnline Advertising
University of Nottingham and CEPR · CEPR
Robust Budget Pacing with a Single Sample
Feb 3, 2023Santiago Balseiro, Rachitesh Kumar, Vahab Mirrokni +2Sample Complexity Online Advertising
DRO, Columbia Business School, New York, NY, USA · Google Research, New York, NY, USA · IEOR, Columbia University, New York, NY, USA

May 16, 2024, econ.GNJ/K move · Enter open · S save

Influencer Cartels

Marit Hinnosaar, Toomas Hinnosaar

University of Nottingham and CEPR · CEPR

Online Advertising

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Social media influencers account for a growing share of marketing worldwide. We demonstrate the existence of a novel form of market failure in the advertising market: influencer cartels, where groups of influencers collude to increase their advertising revenue by inflating their engagement. Our theoretical model shows that influencer cartels can improve consumer welfare if they expand social media engagement to the target audience, or reduce welfare if they divert engagement to less relevant audiences. Drawing on the model's insights, we empirically examine influencer cartels using novel datasets and machine learning tools, and derive policy implications.

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Latest papers 62

Influencer Cartels

Robust Budget Pacing with a Single Sample