Spatial portals

This book discusses spatial portals; Web sites designed to simplify searching, accessing, and using geographic information found on the World Wide Web. The author says that spatial portals have revolutionized how knowledge about the world is managed, stored, shared and used. He notes that "spatial portals allow us to access a network of information that spans the globe, discover information held by others, and present and share our own ideas, plans and solutions." -- from Introduction.