Kling agrees that prediction markets outperform surveys

Here:

Suppose that instead of ratings, you asked consumers to vote with dollars. For any movie, a consumer who owns the movie can post an "ask" price and a consumer who does not own the movie can post a "bid" price. To ensure that these prices are real, every once in a while, you would fill all the orders for a particular customer--that is, you would buy the consumers' DVD's at her asking prices and sell her DVD's at her bid prices.

Welcome to the club, Arnold.