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Ad Networks and Consumer Tracking

Anna D'Annunzio and Antonio Russo

No 6667, CESifo Working Paper Series from CESifo

Abstract: We study the role of ad networks in the online advertising market. Our baseline model considers two publishers that can outsource the sale of their ad inventories to an ad network, in a market where consumers and advertisers multi-home. The ad network increases total advertising revenue by tracking consumers across outlets and reduces competition between publishers by centralizing the sale of ads. Consequently, outsourcing to the ad network is beneficial to the publishers, but may penalize the advertisers. We show that the ad network’s ability to track consumers may either expand or reduce the provision of ads, depending on consumers’ prefer-ences for the publishers and how advertisers use tracking information. Specifically, tracking is more likely to expand (resp. reduce) the provision of ads when consumers’ preferences for the publishers are positively (resp. negatively) correlated. Tracking is also more likely to expand (resp. reduce) the provision of ads when advertisers use tracking information to cap the fre-quency of impressions (resp. target specific consumers). Furthermore, we study the implications of consumers’ choice to block tracking. Generally, blocking generates a negative impact on the advertising industry, by making the allocation of ads less effective. Blocking also entails an externality on consumers, which is negative when tracking reduces the provision of ads. Given these conditions, regulatory restrictions on tracking may reduce consumer surplus as well as advertising revenue. These findings contrast with the presumption that regulation should make it easier for consumers to avoid tracking. We propose further extensions, including competing ad networks, more than two publishers and networks that do not sell ads, but only tracking information to the advertisers.

Keywords: advertising; ad network; internet; tracking; multi-homing; privacy (search for similar items in EconPapers)
JEL-codes: D43 D62 L82 M37 (search for similar items in EconPapers)
Date: 2017
New Economics Papers: this item is included in nep-com, nep-mkt and nep-pay
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2) Track citations by RSS feed

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