Back when kids played outdoors in playgrounds, there was some taunt about acting your age not your shoe size. Well, IBM has managed to figure out that the median shoe heel height for women has been dropping for the fashion conscious, quite precipitately it seems over the past couple of years. IBM based its conclusions on tens of thousands of blog posts and other social media references about shoe discussions. They looked for the key footwear influencers, those who were passionate about their shoes and had large social followings online. So the median height has gone from an incredible seven inches in 2009 down to two this year.