Marks are traditionally said to serve three functions that are separate from the goals of other forms of IP: source identification, advertising, and guarantee of quality. The story, however, that patents and copyrights incentivize creation and that trademarks do not fulfill that purpose does not withstand scrutiny. This Article argues that brands have evolved in such a way that they serve important incentivizing purposes of their own, and that trademark law influences their ability to do so. This Article identifies three generally neglected functions of trademarks. The first pertains to the creation of original, unique marks and brands in and of themselves. Indeed, this Article contends that marks and brands possess a fan base that engages ...