If you have never thought much about the location of your followers that information could prove to be quite useful - particuarly if you are curious about the best time to be tweeting, or are interested in building a following in a specific location (perhaps with some relevant tweets).
Simply log-in to MapMyFollowers with your Twitter account and you'll be able to view a Google Map with markers of your followers - up to 1,000 of them. The site/service even provides a section on common follower terms which is interesting.
MapMyFollowers was built by Scotia Systems, a design firm in Tatamagouche, Nova Scotia.
Below is the distribution of @WebsiteMagazine followers courtesy of the service. We clearly have a lot of work to do in Africa, Russia, China and Iceland.