People have many creative ideas, but only a few of these ideas are realized and lead to innovation. Good ideas often fail because they are not shared between innovators and stakeholders, hence are unlikely to be realized. Consequently, many opportunities are missed to excite customers and to gain a competitive advantage. This paper proposes an innovation process that uses online social networks to lower the hurdle to sharing ideas. The process leverages diffusion effects of social networks while supporting the generation, evaluation, consolidation, and implementation of innovative ideas with lightweight activities. The process is illustrated and discussed using an application example. Although we are focusing on innovation regarding software-intensive systems, we foresee that the discussed process has the potential to be applied to other domains as well.