Mozilla Labs » Blog Archive » Introducing Geode
http://labs.mozilla.com/2008/10/introducing-geode
"Introducing Geode, an experimental add-on to explore geolocation in Firefox 3 ahead of the implementation of geolocation in a future product release. Geode provides an early implementation of the W3C Geolocation specification so that developers can begin experimenting with enabling location-aware experiences using Firefox 3 today, and users can tell us what they think of the experience it provides. It includes a single experimental geolocation service provider so that any computer with WiFi can get accurate positioning data."