We explore substitution patterns across advertising platforms. Using data on the advertising prices paid by lawyers for …. When lawyers cannot contact clients by mail, advertising prices per click for search engine advertisements are 5-7% higher …. Therefore, online advertising substitutes for offline advertising. This substitution towards online advertising is strongest in …

substitutes a price discrimination on the other side. We offer two applications on advertising platforms and also highlight the … role of commitment in eliciting personal information for targeted advertising …