GeoKit for Rails: resources

GeoKit Resources

Bill has a page of live GeoKit demos , including a demonstration of the IP-based geocoder
Andre talks about the in-memory and in-database distance calculations supported by GeoKit
Andre has a post about the :origin argument supported by acts_as_mappable

Rails + GeoKit = easier mapping apps.
Geokit provides geocoding, location finders, and distance calculation in one cohesive package.