Hi, I've made a patch to visualize on a world map the location of remote hosts that connects to our computer. 
Video demo: http://vimeo.com/15138625 

Download the patch (It's a "dirty" patch) but I expect I works for most linux computers...

http://musa.poperbu.net/content/view/94/1/

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Jordi Sala
http://musa.poperbu.net