Here's a Minneapolis Star Tribune story on him and the mapping system
he has in place.
http://www.startribune.com/local/east/136214108.html
I actually did some work on this when I worked for a local GIS company
(Northstar Geographics). Under the hood, it uses an open source GIS
tool called Geomoose. I know Tait also works with ArcGIS. (The main
Geomoose development is in Minnesota.)
Peter Fleck
Seward Neighborhood E-Dem Forum Manager