I first became aware of sketchup from thebax2k's post and have been reviewing tutorials and experimenting with the program ever since. Is anyone else continuing experimentation/use of Sketchup?
Here is a 2-D picture I used from a published adventure, The Shackled City Adventure Path, to create my first 3-D model.
I like the idea of being able to create the streets and roof lines of villages/communities with basic 3-D shapes as seen from above and then develop specific buildings interiors as they become relevant.