Should platforms be held liable for the harms suffered by users? A two-sided platform enables interactions between firms and users. There are two types of firm: harmful and safe. Harmful firms impose larger costs on the users. If firms have deep pockets then platform liability is unnecessary....

This paper explores whether platform liability should be strict or negligence based. In the model, two-sided platforms get revenue from two sources: selling products or services to consumers and selling advertising (or information) to others. There are indirect network effects: higher consumer...