http://www.undoingdepression.com
Good, self-help advice on learning how to "live well". This covers many aspects of depression - changing negative thinking, assertive communication, overcoming procrastination, practicing joy, relaxation techniques, etc.
http://www.blarg.net/~charlatn/
This is Andrew's Depression page, probably the most comprehensive, informative and personal depression website. Frequently asked questions, good descriptions of drug and non-drug treatment, a moving "voices of depression" part, and numerous links to resources. There is a link to the Goldberg Depression Index - an excellent depression self-screening tool.
http://www.suicidepreventionlifeline.org
The mission of this website is to provide immediate assistance to individuals in suicidal crisis by connecting them to the nearest available suicide prevention and mental health service provider.

