From Lifehacker:

New web app Frappr creates Google Maps for groups of people and incorporates their photos in a set of points which map their physical location.

Frappr helps folks visualize far-flung groups - say, for instance, people who post in a message board or who read your weblog or who play a multiplayer online game. It’s a neat application of Google Maps to see real faces and places of people in virtual communities.

I’ve created a RelentlessGrace map for readers of this site. Check out the map & add yourself.