Online media platforms have the characteristics of a particular type of market known as ‘multi-sided’. These businesses create value by bringing advertisers and users together. Access to user data is critical to this process. On the basis of economic literature, the features of multi-sided...

This online appendix to "Insulated Platform Competition" includes proofs and details of our applications.The paper to which these Appendices apply is available at the following URL: "http://ssrn.com/abstract=1694317" http://ssrn.com/abstract=1694317

Consumer credit is now often instantly available on E-commerce platforms. This paper incorporates the liquidity provision into the consideration of platform competition. A platform needs to strike a balance between consumer rebates and consumer credit. We show that if there is an insufficient...