Since the advent of very-high-resolution satellite data rapid crisis respond with maps based on recent satellite images has been helping relief organisations. These maps usually have been created by specialised organizations of which many are organised under the international charter “Space and Major Disasters”. Recently the OpenStreetMap Community has become big and active enough that they are able to contribute a share in interpreting satellite images and updating map data in a crisis scenario. The work that has been done in Haiti is impressing.
A special redering of openstreetmap for Haiti can be found at http://haiti.openstreetmap.nl/.