The Library at the Royal Danish Academy of Fine Arts Schools of Architecture, Design and Conservation launched the crowdsourcing project of arkitekturbilleder.dk in summer 2012 and it has been a great success and experience for us. We have managed to involve some of the users of our picture database arkitekturbilleder.dk and to turn them into contributors. They not only contribute by adding pictures of modern Danish architecture but their overall involvement and engagement in the project has been so overwhelming that we now like to see and call them collaborators.