CNN.Com has begun a Hurricane Katrina survivor's database:
If you were in Katrina's path and want to post your name here, please send an e-mail to the Hurricane Victims Desk. For each person you are reporting for the list, include first and last name, age, hometown, state and a brief message. You may also include a phone number or e-mail address where those on the list may be reached.
Since it went online a few hours ago, 380 names have been added.
Rex Hammock has compiled links to several other databases and Internet sites set up to connect survivors and their families and friends.