This paper examines the relationship between misinformation about product quality and quality standards, such as minimum quality standards and certication criteria, when products are vertically dierentiated in their health/safety aspects. We investigate the welfare eect of regulating...

We propose a duopoly model of competition between internet search engines endowed with different technologies and study the effects of an agreement where the more advanced firm shares its technology with the inferior one. We show that the superior firm enters the agreement only if it results in...