Today, the Internet is the marketplace of the modern world. Every day, countless business deals take place online, from trading-card exchanges to complex financial transactions. Every business with an online presence wants to maximize its digital impact: to be seen, heard, and thought of first. In this electronic business-space, it is the search engines—the ones that sift the ether—that determine who is first. As a result, those who pay a fee can have their businesses appear higher in sea...