Geode is a new plugin made by Mozilla labs for Firefox to determine your exact geographical location. You may download it here. On the welcome website, it says:

“Geode provides a rudimentary implementation of geolocation for the current version of Firefox uses a single hard-coded location provider to enable Wifi-based positioning conforming to the W3C Geolocation specification so that developers can begin experimenting with enabling location-aware experiences today.”

Since there are many upcoming web services using geotagging, Mozilla serves Firefox users with the first experimental browser plugin for geolocation determination.
It can be very useful for notebook users visiting another town who can rapidly find the next hotel or restaurant when using public wireless internet services.
When you go to a website supporting Geode, you can choose in a bar what you want to send: Exact location, neighborhood, city or nothing.

Currently, there aren’t many websites supporting Geode, and they’re often faulty, but when it’s more widely spread, it will be a great addition to today’s searching methods.
At least for my house it works perfectly, it finds my house EXACTLY, not even one meter aside:

Here is a Food Finder service using Geode, it determines my house perfectly, but can’t find any food in the neighborhood… perhaps it’s only working for the USA?