Under the practice of “digital co-op”, manufacturers subsidize the online advertising expenditures of retailers that they sell their products through, even though retailers typically compete with manufacturers in the advertising market and appropriate a share of the manufacturers' channel...

E-commerce platforms, such as Amazon, Alibaba and Flipkart, that match sellers and consumers at an unprecedented scale, operate their internal search engines to help buyers find relevant products from a large number of sellers, and also allow sellers to advertise to consumers for positions in...

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...

We study a scenario in which firms offering products of different qualities can use persuasive advertising to influence consumers' preferences and perceptions about product quality. Consumers have an absolute and a relative component of utility from quality, and derive diminishing marginal...

In sponsored search advertising, advertisers bid to be displayed in response to a keyword search. The operational activities associated with participating in an auction — submitting the bid and the ad copy, customizing bids and ad copies based various factors (such as the geographical region...