This paper takes stock of recent developments related to online consumer ratings and reviews and their effects on consumer behaviour. It provides an overview of key consumer benefits and risks associated with user-generated feedback, and identifies consumer policy challenges, including...

This paper was prepared as background for a discussion held at the OECD in June 2015 on oligopoly markets. It focuses on collusion and conduct facilitating collusion in oligopolies. It provides a brief introduction to the notion of agreement, covers merger control and the analysis of the...