http://www.newsweek.com/stem-gender-gap-science-job-ads-are-mostly-seen-men-1044401

Science job ads are disproportionately seen by men, raising questions about how that disparity may add to the gender gap in science professions.

Women are more expensive to reach because they typically make more purchasing decisions than men do, so marketing algorithms recognize this greater purchasing ability and set higher prices for their views, according to research from Massachusetts Institute of Technology (MIT).