Selling virtual goods for real money is an increasingly popular revenue model for massively-multiplayer online games (MMOs), social networking sites (SNSs) and other online hangouts. In this paper, we argue that the marketing of virtual goods currently falls short of what it could be. Game...

We study the effects of a voluntary skill certification scheme in an online freelancing labour market. We show that obtaining skill certificates increases freelancers' earnings. This effect is not driven by increased freelancer productivity but by decreased employer uncertainty. The increase in...

This paper studies the effects of a voluntary skill certification scheme in an online freelancing labour market. The paper show that obtaining skill certificates increases a worker’s earnings. This effect is not driven by increased worker productivity but by decreased employer uncertainty. The...