The Internet has enabled new forms of large-scale collaboration. Voluntary contributions by large numbers of users and co-producers lead to new forms of production and innovation, as seen in Wikipedia, open source software development, in social networks or on user-generated content platforms as...

Gordon Tullock has been one of the most important founders and contributors to Public Choice. Two innovations are typical Tullock Challenges. The first relates to method: the measurement of subjective well-being, or happiness. The second relates to digital social networks such as Facebook,...

We study in the laboratory the impact of private information revelation on the selection of partners when forming individual networks. Our experiment combines a "network game" and a "public-good game". In the network game, individuals decide with whom to form a link with, while in the...