M-x all-things-emacs

Every few months you see a thread on the emacs news groups polling to see the age or occupation of the users. Recently someone sent out a link on gnu.emacs.help to a site called BuddyMapping with a map for Emacs Users. I have always loved maps, and I am a sucker for these map mash-ups, especially when there is no registration required in order to add yourself.

The thread also points out that the Emacs Wiki contains a list of Emacs User Locations (in text form of course). There is also a link to an Emacs Flickr tag.