Google Maps

Google Maps Directory - Provides a directory to websites offering maps.
http://www.gmapsdirectory.com/

Google Mars - Offers an interactive map of this planet.
http://www.google.com/mars/

Sightseeing with Google Satellite Maps - Armchair sightseeing, with links to many famous places and landmarks. Browse by location, category, and most popular.
http://www.satellite-sightseer.com/

Beginning Google Maps Applications - Offers news about Google Maps applications development with rails.
http://googlemapsbook.com/

Gmaps Pedometer - A hack that uses Google's mapping application to help record distances traveled and calories burned during a running or walking workout.
http://www.gmap-pedometer.com/

GMap Creator - Freeware application from UCL designed to make thematic mapping using Google Maps simpler. Download, sample maps, documentation and a worked example.
http://www.casa.ucl.ac.uk/software/gmapcreator.asp

Google Groups: Google Maps API - Discussions group for developers about the API use.
http://groups.google.com/group/Google-Maps-API?hl=en

Google Maps Plugin for WordPress - Provides a tutorial to use the tool on a WordPress blog.
http://avi.alkalay.net/2006/11/google-maps-plugin-for-wordpress.html

Google Groups: Google Maps Help - Provides a discussions group to share questions between the users of the tool.
http://groups.google.com/group/Google-Maps?hl=en

Street View Fun - Collection of off-beat images from Google Maps.
http://www.streetviewfun.com/

Google Moon - Provides a photographic map of the equatorial region of the satellite with pan and zoom capability, showing locations of the Apollo landings.
http://www.google.com/moon/

Cool Google Maps - Weblog relating fun stuff found in the tool.
http://coolgooglemaps.blogspot.com/

Google Maps API Official Blog - News of the programming interface that lets put the tool web pages.
http://googlemapsapi.blogspot.com/

Wikipedia: Google Maps - Offers presentation and history of the application.
http://en.wikipedia.org/wiki/Google_Maps

Google Maps API - Provides an application programming interface to use the tool on any website.
http://www.google.com/apis/maps/

Google Maps Mania - An unofficial blog tracking the websites, ideas and tools being influenced by the tool.
http://googlemapsmania.blogspot.com/