Philly was a pioneer in this with OpenDataPhilly: http://www.opendataphilly.org/ http://www.opendataphilly.org/ Some really interesting stuff has been built on

Philly was a pioneer in this with OpenDataPhilly: http://www.opendataphilly.org/ http://www.opendataphilly.org/ Some really interesting stuff has been built on this, like this map of property tax deadbeats: http://www.philadelinquency.com/map/delinquent.html http://www.philadelinquency.com/map/delinquent.html