The Economist has released a free eBook with community sourced content based on a 2011 social media campaign for the magazine.

Entitled Thinking Spaces, the eBook showcases The Economist readers’ favorite places to think. It includes submissions from a global community of more than 40,000 fans. Check it out: “The campaign launched with a location-based iPhone application, interactive website and Facebook page all of which allow people to find out where other Economist readers go to think and to share the spaces where they get their ideas.”

Favorite thinking spaces include locations from 100 countries including places in Amsterdam, Istanbul, New York and Berlin. Half of the chosen spaces were in cities and the other half were in remote locations. Follow this link to the free PDF version of the eBook.