GeoTagging, sometimes referred to as Geocoding, is the process of adding geographical identification metadata to various media such as websites, RSS feeds or images. This data usually consists of latitude and longitude coordinates, though it can also include altitude and placenames.
GeoURL is a location-to-URL reverse directory. This will allow you to find URLs by their proximity to a given location. Find your neighbor's blog, perhaps, or the web page of the restaurants near you.
GeoURL meets Google Maps
Leigh Dodds made a super neat GeoURL to Google Maps converter using the RSS feeds.
"Ive come up with a method, that makes adding GeoTags to your Flickr images, and then submitting the images to the geobloggers.com site a slightly more automated process."
panoramio - Photos of the World
Connecting Wikipedia articles with their location