Masturbation

Clitical.com
A female friendly site that aims to educate visitors about female masturbation. Visitor submissions are welcomed and encouraged.
http://www.clitical.com/

Jackinworld
A site geared toward men that includes news, forums, FAQs, articles, and surveys.
http://www.jackinworld.com/

Masturbation: A Sin for Christians?
Examination of masturbation as it relates to the Bible.
http://www.acts17-11.com/dialogs_masturbation.html

Masturbation and the Bible
An anti-masturbation article by Lambert Dolphin with interpretations and advice. Includes notes and references.
http://www.ldolphin.org/Mast.shtml

Masturbation from a Christian Perspective
An overview of Evangelical, liberal Christian, and medical viewpoints.
http://www.religioustolerance.org/masturba.htm

Masturbation, Relationships, Honesty, and Daily Routines
Addresses topics regarding honesty, common self-love routines and methods, terminology, and relationship advice for males and females.
http://www.vexen.co.uk/human/masturbation.html

Solo Touch
Educational information about human sexuality in general and masturbation in particular.
http://www.solotouch.com/

Traumatic Masturbatory Syndrome
Information about a potentially damaging sexual practice many men don't know they have.
http://www.healthystrokes.com

Wikipedia - Masturbation
Offers articles on etymology, health information, psychological effects, and history.
http://en.wikipedia.org/wiki/Masturbation