While the private sector has already discovered the wide set of benefits of web 2.0 technologies (McKinsey, 2009), the public sector is only beginning to use these tools. Especially the use of interactive and collaborative tools in FTA for priority setting has been rather limited until today. Examples in both a public and private sector environment suggest great potential for web 2.0 foresight in public organisations and policy-making, both in terms of advancing foresight methodologies and in terms of increasing transparency. This paper develops a framework for designing a web 2.0 foresight exercise, building on the For-Learn Foresight Cycle, experiences from other disciplines such as market research with web 2.0 research, and hands-on project experience from JRC-IPTS. It applies the framework to the design and implementation of a foresight case of the European Institute of Innovation and Technology (EIT), where a web 2.0 ideation platform was used to collect ideas from research and development communities across the globe for world leading innovation that integrate education, business and research with a specific thematic focus. It is concluded that key elements in the design are clarity about process and outcome objectives, a systematic approach to tool selection, the organisation of a pilot before the launch, a clear view on sense-making from the data collected, and a certain degree of autonomy in the management of the foresight process.