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...

Economists have long recognized that advertising has two main functions: to inform and to persuade. In the information age, the information function is obsolete, because consumers can get all the product information they want from a quick Google search. That makes virtually all advertising today...

The vast amount of product information available to consumers through online search renders most advertising obsolete as a tool for conveying product information. Advertising remains useful to firms only as a tool for persuading consumers to purchase advertised products. In the mid-twentieth...

Digital advertising markets are growing and attracting increased scrutiny. This paper explores four market inefficiencies that remain poorly understood: ad effect measurement, frictions between and within advertising channel members, ad blocking and ad fraud. These topics are not unique to...

Consumers have shifted their consumption of online content dramatically from websites that they browse from a personal computer to apps that they use on mobile devices. Marketers have moved with the eyeballs, particularly since people use their smartphones much of the day and carry them wherever...

Whether consumers are aware of potentially adverse product effects is key to private and social incentives to disclose information about undesirable product characteristics. In a monopoly model with a mix of aware and unaware consumers, a larger share of unaware consumers makes information...

This paper is the first to estimate the impact of exposure to deceptive advertising on consumption of the advertised product and its substitutes. We study the market for over-the-counter (OTC) weight-loss products, a market in which deceptive advertising is rampant and products are generally...

Native advertising, which matches the look and feel of unpaid news and editorials, has exploded online. The Federal Trade Commission has long required advertising to be clearly and conspicuously labeled, and it recently reiterated that these requirements apply to native advertising. We explore...

This paper studies the effect of nutrition warning labels and advertising restrictions on the breakfast cereal market in Chile. In June 2016, the Ministry of Health required food products that exceed thresholds for sugar (22.5g) and calories (350kcal) to carry conspicuous front-of-package...

This paper investigates whether newspapers report more favorably about advertising corporate clients than about other firms. Our identification strategy based on high-dimensional fixed effects and high frequency advertising data shows that advertising leads to more positive press coverage. This...