The following are some useful links but this list is by no means exhaustive.  The LINKS page at feministing.com has a much more thorough listing for Women’s Studies resources:

feministing LINKS page

Below are links that I often use; feel free to email me with any links you would like to see added to this list!

Bitch Magazine

Google

Grammar Bytes

Guerilla Girls

HWS Women’s Studies

Jezebel

meebo

MLA Citation Examples

Planned Parenthood

Scarleteen

Wikipedia

The Women’s Museum

Women in Science: 50 Must Read Bloggers

Women’s Health News