Open innovation changed the traditional innovation concept based on internal processes by leveraging on collaborations among several participants involved in order to tap into crowd wisdom: the participation of large amounts of people makes more likely the collection of “extreme outcomes”, intended as brilliant ideas distinguishable from average suggestions, which are valuable for companies. Thanks to the advancement in information technologies, an approach increasingly used to open up the innovation process and achieve explorative searches is crowdsourcing, aimed to help in the idea generation phase by leveraging the collective intelligence of the crowd. Despite theoretical claims on the benefits of crowdsourcing, and the argued positive e...