If you want to make a donation to the victims of Japan, or for any other humanitarian effort, just head over to the Red Cross website.
You can also use your cell phone to help out. Just text REDCROSS to 90999 and you'll make a $10 donation.
The Salvation Army is also accepting donations. Text "Japan" or "Quake" to 80888 to make a $10 donation (Please respond "YES" to the Thank You message received.) You can also call 800-SAL-ARMY.
If you're looking for U.S. citizens living or traveling in Japan, officials say the best way to locate them is to contact the State Department at 888-407-4747. You can also go to the Red Cross Family Links website.