LuminaNET was a professional social network (http://luminanet.org) for people working on off-grid lighting solutions. This included field technicians, manufacturers and distributors of clean lighting products, investors, researchers, and non-governmental organizations, foundations, and policymakers. In just a few years, over 700 people had joined the network from 104 countries. Members could post quick questions or comments in the forum or in topical groups, post longer items to the blog, upload topical photos or videos, add events to the community calendar, and maintain a professional profile.Â