I'm reasonably sure this HN submission came from a discussion on the latest Geek Friday (http://5by5.tv/geekfriday/59). I say this because someone posted the article to the Google+ group (https://plus.google.com/107635569257603441624/posts/HmNguCkZ...) and then it wound up here. It's a pretty interesting article, though I still think heels and wedge shoes are, at this point, an elaborate prank.