Chile earthquake: Google's Person Finder tool
Google's Person Finder for the Chile Earthquake has now reached more than 39,000 records. The U.S. State Department sent out an e-mail with a link to the tool shortly after the quake hit. The same tool was used during the Haiti earthquake and has more than 55,000 records.
Credit: Google Person Finder is an open source, released under the Apache 2.0 License.