We study a search market where firms may design products of inferior quality to promote them to naive consumers who misjudge product characteristics. We derive an equilibrium in which superior and inferior quality co‐exist and show that as search frictions vanish, the share of superior goods...

We study contracting between a public good provider and users with private valuations of the good. We show that, once the provider extracts the users' private information, she benefits from manipulating the collective information received from all users when communicating with them. We derive...