The sponsors of the site, in exchange for having their advertisements there, contribute to a fund to help women who do NOT have health insurance get free mammograms. Early detection of breast cancer is often the key to successful treatment. All you do is click on the link. There are no cookies or anything else involved and it doesn't cost you anything but a minute or so of your time. And, because of it, a woman who might not have been able to afford a mammogram may be able to get the test and find out early about any problem she might have.