Some of these were unsurprising. E.g. the recent column on the FSDC at #1 is to be expected, given the topicality of the subject. But some remarkably old stuff is high up - e.g. #4 (1999) and #5 (1997). So web dissemination does give shelf life to some of these.
After a sharp peak (over 100 reads in five days) it drops off rapidly to 20 reads at #15, and after that there is a long tail, giving the overall value of 2534 reads overall.