Illegal or unwanted waste disposal methods such as dumping and export are prevalent in practice. To minimize the negative impact of these methods, policymakers have implemented laws and regulations designed to combat them. Even so, violations are rampant as a high degree of heterogeneity between...

One of the hallmarks of competitive interaction is each firm’s desire to differentiate from rivals. Although differentiation may be achieved through product related choices, advertising levels may constitute another key mechanism. In this paper, we examine under what conditions firms will...

In Chapter 1, I propose a model in which consumers base their purchasing decisions upon their recollections of the product quality, and in which firms can use persuasive advertising in order to change these recollections. Although consumers are aware that such advertising has occurred and take...

A key property of the World Wide Web is the possibility for firms toplace virtually costless links to third-party content as a substitute orcomplement to their own content. This ability to hyperlink has enablednew types of players, such as search engines and content aggregators, tosuccessfully...

Web sites invest significant resources in trying to influence their visibility in online search results. We study the economic incentives of Web sites to invest in this process known as search engine optimization. We focus on methods that improve sites' ranking among the search results without...

Web sites invest significant resources in trying to in influence their visibility among online search results. In addition to paying for sponsored links, they invest in methods known as search engine optimization (SEO). We study the economic incentives of Web sites to invest in SEO and its...

Web sites invest significant resources in trying to influence their visibility among online search results. In addition to paying for sponsored links, they invest in methods known as search engine optimization (SEO) that improve the ranking of a site among the search results without improving...

This paper studies the competition between firms for influencers in a network. Firms spend effort to convince influencers to recommend their products. The analysis identifies the offensive and defensive roles of spending on influencers. The value of an influencer only depends on the in-degree...

Web sites invest significant resources in trying to influence their visibility in online search results. We study the economic incentives of Web sites to invest in this process known as search engine optimization. We focus on methods that improve sites' ranking among the search results without...