Both sides of a two-sided market are usually modeled as markets without product differentiation. Often however, it will be profit maximizing to differentiate one or two sides in two or more types. In a simple theoretical model, inspired by Yellow Pages, we show that this decision crucially...

Newspapers are two-sided platforms that sell their product both to readers and advertisers. Media firms in general, and newspapers in particular, are considered important providers of information, culture and language in most countries. Newspapers are therefore given preferential tax treatment....