National Institute of Mental Health (NIMH)
http://www.nimh.nih.gov/
The National Alliance for the Mentally Ill (NAMI)
http://www.nami.org/
American Psychological Association
http://www.apa.org
American Psychiatric Association
http://www.psych.org
The Secret Shame Site
Despite its name, a useful and compassionate site
http://crystal.palace.net/~llama/selfinjury/injury...
SPEAK (Students Promoting Education, Awareness and Knowledge of Eating Disorders)
http://www.umich.edu/~speak/
National Center for Post-Traumatic Stress Disorder
http://www.ncptsd.org/
EDEN (Eating Disorders Education Network)
http://www.edenclub.org
Eating Disorders Coalition
http://www.eatingdisorderscoalition.org
Depression and Bipolar Support Alliance
http://www.dbsalliance.org/