Scott Westerfeld's previous novels have been named New York Times Notable Books of the Year, made the New York Times essential summer reading list, and been awarded the Philip K. Dick Special Citation.Amazon.com: So Yesterday
Description: Ever wonder who was the first kid to keep a wallet on a big chunky chain, or wear way-too-big pants on purpose? What about the mythical first guy who wore his baseball cap backwards? These are the Innovators, the people on the very cusp of cool. Seventeen-year-old Hunter Braque's job is finding them for the retail market.
But when a big-money client disappears, Hunter must use all his cool-hunting talents to find her. Along the way he's drawn into a web of brand-name intrigue- a missing cargo of the coolest shoes he's ever seen, ads for products that don't exist, and a shadowy group dedicated to the downfall of consumerism as we know it.
Via Boing Boing: Cool-hunter detective story