The performance of prediction markets has been one driving force behind the renewed attention on distributed problem solving. This case reviewed the feasibility and performance of prediction or information markets, discussed some apparently successful applications, considered likely limitations...

Originating as a study of the online news aggregator Digg, which relies on user ratings to determine which articles to put on the frontpage, this study evolved into a comprehensive survey of the online news aggregator space. This case study explores the conditions under which crowds are smart,...