GIS ALL OVER
http://www.ArchitectureWeek.com/2007/1003/tools_1-1.html
We are blown away by the amount of GIS data that is now available online. GIS, or Geographic Information System, data refers to a mapping database. Most people are now familiar with free mapping services such as Mapquest, Windows Live, or Google Earth, but GIS data goes well beyond that level of information.