The European Space Agency has put some of its satellite images of the Asian disaster online:
Since the disaster struck, three authorised users of the International Charter on Space and Major Disasters have requested its support from the on-duty operator at ESA/ESRIN. Satellite images of the disaster areas taken before and after the tsunami have been supplied to the UN Office of Outer Space Affairs, the French Civil Protection and the Indian Space Research Organisation.
It helps give an idea of scale of the disaster.
BlogAid, meanwhile, is urging bloggers to donate their Google and Amazon ad revenues to helping the tsunami relief effort.