The map files are recreated for every update by a program that can be edited to change how the list index is organized, or to break the output up into smaller map sections. I felt the interface was more useful if people could easily just look at the map and zoom in and out to see their area of interest, rather than specifically linking to one geographical area. I'm open to changing things if there is some sort of consensus on an improved format and nobody is in a giant hurry. I did have to go to the US/non-US format to split things up because we were over the 1000 item limit currently imposed by Google Maps. In fact, the US entries have grown to the point that we are about to cross that barrier with just US entries. So I may need to break it down into smaller chunks anyway. I'm thinking probably East/West.