Prostitution bears the unique title of being both the "world's oldest profession" and one of the least understood occupations. Unlike most of the crime and family literature, prostitution appears to have all the features of traditional markets: prices, supply and demand considerations, variety in the organizational structure, and policy relevance. Despite this, economists have largely ignored prostitution in their research and writings. This has been changing, however, over the last twenty years as greater access to data has enabled economists to build better theories and gain a better...