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When contributing content on large online platforms, producers of user-generated content have to decide where to contribute. On a complex and dynamic platform like wikipedia, this decision is expected to depend on the way the content is organized. We analyse whether the hyperlinks on Wikipedia...
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Wikipedia can be considered as an extreme form of a self-managing team, as a means of labour division. One could expect that this bottom-up approach, with the absense of top-down organisational control, would lead to a chaos, but our analysis shows that this is not the case. In the Dutch...
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In the copyright policy debate, proponents of strong copyright protection tend to be dismissive of the quality of freely available content. In response to counter-examples such as open access scholarly publications and advertising-supported business models (e.g., newspaper websites and the...
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We document a causal impact of online user-generated information on real-world economic outcomes. In particular, we conduct a randomized field experiment to test whether additional content on Wikipedia pages about cities affects tourists' choices of overnight visits. Our treatment of adding...
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I quantify spillovers of attention in a network of content pages, which is challenging, because such networks form endogenously. I exploit exogenous variation in the article network of German Wikipedia to circumvent this problem. Wikipedia prominently advertises one featured article on its main...
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