This document discusses the economic value of open data. It defines open data as content that people are free to use, reuse, and redistribute without legal or technological restrictions. Open data comes from public sources like government websites and social media, as well as proprietary corporate and personal data that requires authentication. Combining open, public, and closed data creates new opportunities to add value through features like notifications, analytics, and visualizations. While open data brings benefits, challenges remain around privacy laws, adoption rates, and linking data from different sources. Overall, open data from all sectors has significant potential to fuel innovation and economic growth when handled responsibly.