The volunteers from Crisis Commons who assisted during the response phase have phased out their effort; now the site now is titled Christchurch Recovery Map.
Sendai/Honshu Earthquake (March 11):
As you might expect, the Crisis Commons folks are up and running with mapping and other services plus a wiki devoted to the Honshu, Japan earthquake and tsunami event.
For fantastic graphics, go this USGS website, and view the Google maps view of Honshu and environs.
