By sheer web search accident, I stumbled on to Andy M’s Yahoo Pipe for putting your twitter followers locations on a map:
The numbers ar enot a count per country, but a number on the list of 100, and you can pop from one pin to the next in a cheap world tour.
Note that it maps 100 of your followers, so no hopes Scoble et al for popping 25000 pins on a map. And I am not sure if these are the 100 most recent or just the random way twitter lists your followers.
This is less of an interest in using this Pipe and more of a reminder (note to self, not a freaking resolution) to learn more about Yahoo Pipes (so I can more partly understand what the hell Tony Hirst cooks up in his kitchen),