Try searching for GIS data using answers dot com for some decent results!

This nifty search utility which I confess, I'm not terribly familiar with, is very sweet! Check out answers.com for somme very decent results! USers start with a wi-ki style format where you can get very accurate definitions for almost any term. Then use the search utility for somme great leads! http://www.answers.com - As a testbed I search for "alabama gis data" and the utility returns pointers to the following top resources: GSA Geospatial Data Clearinghouse , Alabama Water Quality Information System - Geo-Spatial Data, GIS Data Sets Alabama