Every now and then, someone will solicit me to help a cause and I won't tell them to go to hell. Helping fund breast cancer detection is one such cause - women in the US have a 1 in 8 chance of developing it (Wikepedia - Breast Cancer) and a 1 in 35 chance of dying from it (that's all women - so more like 1 in 4 for women who have breast cancer.) Anyway, it's highly treatable with early detection, and the breast cancer site has a click-through set up whereby their sponsors donate money that the Breast Cancer Foundation uses to fund mammography for under-privileged women. So it's a lot like those ads about getting a free TV, except that you don't have to sign up for anything, give them an e-mail address, answer inane questions about Jessica Simpson, etc. etc. and it's not a scam.
Follow the link, and then click the big pink button near the top of the page.
The Breast Cancer Site