I've been putting some editing mechanisms into GeoTiddlyWiki to allow easy map editing and just wanting to share my work.

I've created an adaption of GeoTiddlyWiki which changes the mouse clicking behaviour to allow colouring of countries as well as geotagging by clicking on specific locations in the map or by searching using the google local search api. It's a bit immature but you can see this in action in this TiddlyTravel map. Feel free to save the page and play with the copy yourself or to import the tiddlers into a local tiddlywiki. As always here is the geotiddlywiki svn code.