Solving complex tasks by collaborative teams is an important organizational capability. Beside traditional team work, an organization's collective intelligence can be supported by social software technologies. Within business process management (BPM), social software can be used to support the different lifecycle steps of a business process. In this paper, we introduce a framework which shows possible opportunities for social software to contribute to effective BPM. An expert workshop was conducted to receive a first evaluation of the framework. The combination of social software and BPM is supposed to improve the functional performance of IT systems for BPM and the employees' acceptance for BPM systems.