While we're on the subject of breast cancer, this is taken from an announcement post I made (and try to keep updated) to a PinkRibbon group I manage elsewhere. Knowledge is a huge part of winning the battle.
Breast Cancer Awareness/Education Links
I will update this post with additional links periodically, but for now, here are a few to get us started:
Pink Ribbon Wikipedia, the free encyclopedia
Pink Ribbon Inc.
Pink Ribbon International
Pink Ribbons Project
Making Strides Against Breast Cancer
More Breast Cancer Screening Needed in Younger Women