Makes sense the most active users would be the one's with the most free time (the younger and unemployed). Unless of course there are many people - such as myse

Makes sense the most active users would be the one's with the most free time (the younger and unemployed). Unless of course there are many people - such as myself - who consider Hacker News a fairly useful learning resource and so contribute (albeit not very often) despite having a lot of other things to do? I'd be very interested to see how the average age of the submitters of "useful" content - e.g. posts which rate highly (ok a very tenuous definition of useful) and content heavy comments - compares to the overall average.