Latest crisis, like the earthquake in New Zealand and Japan followed by the nuclear endangerment keep us breathless. But these crisis have born a new very popular field of web mapping, which can be called as Social Crisis Mapping. The first big event where these kind of effort has be seen on a large scale was the Haiti earthquake in 2010.
Social Crisis Mapping tries to collect as many information as possible from different social networks and put them together on a map, which fuctions as usebale interface. People can quickly get an overview about the situation and find locations where news are related to or facilities has etablished or dangers occur.
The latest Social Crisis Map I have found on the web covers the Lybia crisis. A detailed map includes a timeline and points different layers on the map.