I found that article very interesting. I find the context it is explained within rather uncomfortable (working out whether a girl you found in a club is likely to agree to sleep with you), however the basic concept is sound. It is a concept that you know instinctively, on some level, but without really seeing it that clearly. That article takes the concept, clearly excises it from related concepts, examines it clinically and unemotively, and turns it into a testable, repeatable scientific hypothesis. Anything that takes an aspect of the female brain and explains it in terms that are understandable to a male brain is worth reading!