Some cool work happening on location-awareness and blogs. Amazing what a little XML can do. Here are some things to look at:
* blogosphere. This let's you see a globe, spin it and then click on various blogs.
* "Blogosphere Usage":http://blogosphere.headmap.com/docs/bg-mt.htm. This thing requires two plug-ins. One called "GeoURL":http://www.geourl.org/mt.html let's you add latitude and longitude to MovableType blog entries and another does "HeadmapXML":http://blogosphere.headmap.com/download/movabletype/HeadmapXMLData.pl to load this in the correct format.
* "Your location":http://geourl.org/resources.html. Geourl gives you some links so that you can figure out where you are if you don't have a GPS handy.