It would be interesting to see HN demographics and how it has evolved over the years (region, gender, browser, OS). Anyone who has that data and could post here?
As noted in some of the threads that GFischer has kindly linked to, voluntary response polling is not a reliable way to gather demographic data about HN. The HN webmaster may (or may not) have automated gathering of data about browswer and OS, although my wild guess would be that HN's participant population includes an unusually large number of persons who hide or obfuscate such data on the client side.
