As wireless groups grow in size a number, many people have implemented their own node database, ususally with a mapping system. This is a place to keep track of these projects to keep from reinventing the wheel. --DonPark
http://maps.personaltelco.net BR Personal Telco's node db/mapping project. open to all.
http://www.shmoo.com/gawd/ BR Global Access Wireless Database
http://www.consume.net/nodedb.php BR Interesting angle, they show a map of the nodes with no underlying topographical or political map. It does bypass the issue of where to get good map data.
http://www.boingo.com/search.html BR Boingo, a commercial venture, keeps a list of public access nodes.
http://ofb.net/seattlewireless/ BR Current node map for Seattle Wireless. Judging from their [http://seattlewireless.net/index.cgi/NodeMap Node Map Wiki Page], they aren't too happy with their solution and are considering rolling their own. --TomOffermann