The document discusses collaborative geospatial mapping and public licensing. It notes that the geospatial web allows non-GIS professionals to participate and collaborate by using geoinformation in everyday life. However, existing geodata has not been reused effectively and new geo-information contributed by people's collaboration has not been well managed. The key issues are how to effectively manage and license public geospatial data. The document presents GeoCommons as a case study of an online platform that allows open sharing and reuse of geospatial datasets through public licensing.