In recent years Google has been accused of manipulating its organic search results to favor its own services. We explore possible choices of relevant antitrust markets that might make various antitrust allegations meaningful. We argue that viewing Internet search in isolation ignores the...

This paper provides an overview of the development of Internet advertising. We offer a broad overview of both online and offline advertising and the economic models that allow one to evaluate competition among advertisers. We focus on the extent to which various types of online advertising...