Gina, over at Lifehacker.com, tipped us to the existence of Frappr Maps - a Google Map hack that allows members of online communities to register their names (or handles) and locations, and point out where they're participating from.
I use Sitemapper's "World Map" feature all the time, and I know that we've got readers from all over the place. But in most cases I don't know much more about them.
Do me a favor? When you have a second, register yourselves at enrevanche's Frappr page, and add a photo or image (nothing grossly pornographic... I'm looking at you, Bill in Exile) and a shout-out.