Quora's discussion on "What things are most useful for men to keep in mind when discussing theories or topics relating to gender?" http://www.quora.com/What-things-are-most-useful-for-men-to-...
Ellen Spertus's classic "Why are There so Few Female Computer Scientists?": http://people.mills.edu/spertus/Gender/pap/pap.html
The handy "Male Programmer Privilege Checklist": http://geekfeminism.wikia.com/wiki/Male_Programmer_Privilege...
"HOWTO Encourage Women in Linux": http://www.faqs.org/docs/Linux-HOWTO/Encourage-Women-Linux-H...
And that useful reference "Derailing for Dummies": http://derailingfordummies.com/