1. Introducing grassroots innovation movements -- 2. An analytical framework for studying grassroots innovation movements -- 3. Socially useful production -- 4. The appropriate technology movement in South America -- 5. People's science movements -- 6. Hackerspaces, fablabs and makerspaces -- 7. The social technology network -- 8. The honey bee network -- 9. Grassroots innovation movements : lessons for theory and practice -- 10. Conclusions.