Coolhunting

She was a coolhunter with forty different legal identities. Her job: to drive fads; to find the "next cool thing" five to ten times per week. She was one of the best. Entire corporations rose and fell under her influence. But then some really uncool things started to happen...

From the description, this sounds like an adaptation of the idea first pioneered by Connie Willis in Bellwether. Although I haven't read this adaptation, I have read other works by this author, and most of Connie Willis' work; between the two, Connie Willis is the better author, but even in good hands it makes for little more than an interesting intellectual exercise.