Shrink Tank http://www.shrinktank.com/
A collection of links and bulletin board systems from all over the USA, including a vast collection of psychology/mental health oriented text files. Free.
SupportPilot http://www.supportpilot.com
Medical and Psychosocial Support alliance. Resources for individuals with chronic mental or medical illnesses. Tips, information and links classified by disease/disorder.
ULifeline http://www.ulifeline.org/
Provides students with a link to their respective college's mental health center. Also offers a mental health library, drug database, and self evaluation.