I found the following Open Source GIS related presentations written by GreenWood map over the past 2 years informative, especially the Parcel Mapping complexities found in Wyoming.
- Skeletonizing Polygons Using PostGIS
- Cartography and Topology
- Parcel Mapping WyGEO Meeting
- Simplifying Geomoetries Using Open Source Tools
The presentations are available on the Greenwood website.