Almost exactly a year ago, I finished the import of a large amount of road data for Haiti. This was the result of the mapping community responding to the devastating storms and flooding that shook the country, and the need for good quality data for people to share. Now the country is struck by another disaster.
The main page coordinating efforts from OSM is here:
We’ve set up a special Map Warper instance at http://maps.nypl.org/relief/maps has a number of public domain maps that you can warp. Please come along and rectify these maps. OSM volunteers will then trace over the top and add these onto the map.