Media Predict (powered by Inkling):
Using our prediction markets as a guide, Simon & Schuster will eventually choose five Media Predict books as finalists for publication. [...]
Throughout the contest, though, Simon & Schuster editors will take on board feedback they receive from Media Predict users and markets. In the end, our markets will help Simon & Schuster find an excellent book that truly deserves to succeed. [...]
Bizarre.
The future decision of the Simon & Shuster editors should be the retro-feedback that informs the traders for their speculations, rather. 
Addendum: Media Predict FAQ
