Mikel Maron has released a tool for Radio UserLand: Location for Radio Userland. When he posts an item, he can add the latitude/longitude coordinates to geolocate his messages. These ones are added to his RSS feed. You can click on a small map icon to get a map showing where the post was posted. Better yet! He provides a world map where you can see where he took his pictures.
A Safari trick : If you Command-click on the title of the window, you can choose to go to the upper levels of the website. (It works the same in other applications, to go up a level in local directories)
The French translation of the RSS 2.0 spec is available. Note that the Creative Commons license allows me to do this translation without asking the author, given the fact that the original spec is credited.