I found an article on Wired News called A Disaster Map ‘Wiki’ is Born. The article points to the Katrina Information Map at scipionus.com. The site is powered by Google Maps and allows people to add markers to the map to post information about the areas in which the hurricane has effected.

This is another good example of what I wrote about back in July about application level reuse and the ‘crowds’ ability to create software a company would never have envisioned by using published application programming interfaces.