Digital Globe, a satellite imaging company (who provide a lot of the data Google uses), has done this for the MH370 flight using a platform called Tomnod.com, which is currently directing all users straight to the search page. The images they're showing now were taken on 3/9, so apparently they are able to re-task their satellites fairly quickly.

Something similar was done using Amazon Mechanical Turk during the search for Jim Gray.

Digital Globe, a satellite imaging company (who provide a lot of the data Google uses), has done this for the MH370 flight using a platform called Tomnod, which is currently directing all users straight to the search page. The images they're showing now were taken on 3/9, so apparently they are able to re-task their satellites fairly quickly.

More info on how to use this is available at How To Use Tomnod To Find MH370.

Something similar was done using Amazon Mechanical Turk during the search for Jim Gray.