This paper provides a simple model of two-sided platforms, in which one side (W) values not just the quantity (i.e. number) of users on the other side (M), but also their average quality in some dimension. In this context, platforms might find it profitable to exclude low-quality users on side...

This paper provides a basic conceptual framework for interpreting non-price instruments used by multi-sided platforms (MSPs) by analogizing MSPs as "private regulators" who regulate access to and interactions around the platform. We present evidence on Facebook, TopCoder, Roppongi Hills and...

This paper provides a first pass at clarifying the economic tradeoffs between two polar strategies for market intermediation: the merchant mode, in which the intermediary buys from sellers and resells to buyers; and the two-sided platform mode, under which the intermediary enables affiliated...