The disasters in Japan have left many people stranded and many more people missing-- and a lot of people outside the country don't know how to help. So, I have made a compilation of links to help the relief effort.
Global Giving: Japan Earthquake and Tsunami Relief Fund This organization is giving to several different groups who are helping Japanese victims.
The American Red Cross
The Canadian Red Cross
The British Red Cross
Российский Краскый Крест
Google Person Finder: 2011 Japan Earthquake A searchable database of missing/found people in Japan. The database has information on people, including whether they are alive, dead, missing, or unknown. You can add to the database if you have information on a person.
I hope this helps.