Katrina Search is another new service designed to let you meta search from a variety of web sites that have information about people missing in the wake of Hurricane Katrina. Search Katrina Missing Persons Sites from Lycos and Katrina: Search for Missing People from Yahoo are two others we mentioned going up last week.
Meanwhile, Sites not yet in sync on searches looks at how Yahoo cofounder David Filo got personally involved to create the Yahoo service. It also illustrates how what sounds to me to be dynamic URLs from a Microsoft server platform meant a new site from the Red Cross became unspiderable by Yahoo and other services.
That's apparently been fixed or will be shortly. The story calls the site "Family First" but I believe it is actually this one: Family Links Registry.