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How much influencer marketing is undisclosed? : evidence from Twitter

Ershov, Daniel; He, Yanting; Seiler, Stephan - 2023

We quantify the prevalence of undisclosed influencer posts on Twitter across a large set of brands based on a unique data set of over 100 million posts. We develop a novel method to detect undisclosed influencer posts and find that 96% of influencer posts are not disclosed as such. Despite...

Persistent link: https://www.econbiz.de/10014422653

Advertising competition in the free-to-air TV broadcasting industry

Ivaldi, Marc; Zhang, Jiekai - 2017

This paper empirically investigates the advertising competition in the French broadcast television industry within a …, and quantities of advertising of twenty-one TV channels from March 2008 to December 2013. We specify a structural model of … French TV advertising market is of the Cournot type. Further, we provide empirical evidence that the price-cost margin is not …

Persistent link: https://www.econbiz.de/10011646956

Double marginalization and vertical integration

Choné, Philippe; Linnemer, Laurent; Vergé, Thibaud - 2021

Asymmetric information in procurement entails double marginalization. The phenomenon is most severe when the buyer has all the bargaining power at the production stage, while it vanishes when the buyer and suppliers' weights are balanced. Vertical integration eliminates double marginalization...

Persistent link: https://www.econbiz.de/10012494786

Fighting collusion by permitting price discrimination

Helfrich, Magdalena; Herweg, Fabian - 2016

We investigate the effect of a ban on third-degree price discrimination on the sustainability of collusion. We build a model with two firms that may be able to discriminate between two consumer groups. Two cases are analyzed: (i) Best-response symmetries so that profits in the static Nash...

Persistent link: https://www.econbiz.de/10011434582

Dissipative advertising signals quality even without repeat purchases

Linnemer, Laurent (contributor) - 2008

Persistent link: https://www.econbiz.de/10003712507

Privacy regulations, consumer empowerment, and versioning

Choe, Chongwoo; Cong, Jiajia; Matsushima, Noriaki; … - 2025

preferences for the service and privacy costs incurred when sharing data with the firm. In a monopoly, the firm is better off …

Persistent link: https://www.econbiz.de/10015339880

Ad networks, consumer tracking, and privacy

D'Annunzio, Anna; Russo, Antonio - 2017 - This version: September 2017

We study the relation between ad networks, consumer privacy and the online advertising market. We consider two …). We show that tracking may increase or decrease the provision of ads, depending on its effect on expected advertising …

Persistent link: https://www.econbiz.de/10011723426

Politics in the Facebook era evidence from the 2016 US presidential elections

Liberini, Federica; Redoano, Michela; Russo, Antonio; … - 2020

unprecedented precision. We assess the effects of such political micro-targeting by exploiting daily advertising prices on Facebook …

Persistent link: https://www.econbiz.de/10012206082

Strategic limitation of market accessibility : search platform design and welfare

Teh, Christopher; Wang, Chengsi; Watanabe, Makoto - 2023

This paper explores the relationship between market accessibility and various participants' welfare in an intermediated directed-search market. For a general class of meeting technologies, we provide a necessary and sufficient condition under which efficiency requires imperfect accessibility,...

Persistent link: https://www.econbiz.de/10014295063

The limits of marketplace fee discrimination

Tremblay, Mark J. - 2021

Platforms often use fee discrimination within their marketplace (e.g., Amazon, eBay, and Uber specify a variety of merchant fees). To better understand the impact of marketplace fee discrimination, we develop a model that allows us to determine equilibrium fee and category decisions that depend...

Persistent link: https://www.econbiz.de/10012692299