Here is a link to the ICRC (RedCross) portal web site:-
http://www.familylinks.icrc.org/home.nsf/home/webfamilylinks
It has links to various other sites, including the tsunami affected areas:-
Importantly, it is now listing NAMES OF MISSING PERSONS - and their other personal details and it should be an excellent site to assist in re-establishing contact with loved ones.
It says, "Select the country or region which concerns you, and click on the appropriate link." and covers
Bay of Bengal (Sri Lanka, Indonesia, Thailand, India - and other local countries.)
Somalia, Haiti, Gulf 2003 (the Iraq conflict), Angola, Liberia - Sierra Leone, Kosovo, Bosnia and Herzegovina and 'All Other Countries'