You can maybe get some understanding from the data gathered by Hacker News Karma Tracker. This can only be done starting in February 2013, though, since it onl

You can maybe get some understanding from the data gathered by Hacker News Karma Tracker. This can only be done starting in February 2013, though, since it only includes accounts that have made comments since mid-January. 3326: http://hn-karma-tracker.herokuapp.com/month/february-2013 http://hn-karma-tracker.herokuapp.com/month/february-2013 2013: http://hn-karma-tracker.herokuapp.com/month/march-2013 http://hn-karma-tracker.herokuapp.com/month/march-2013 1115: http://hn-karma-tracker.herokuapp.com/month/april-2013 http://hn-karma-tracker.herokuapp.com/month/april-2013 1557: http://hn-karma-tracker.herokuapp.com/month/may-2013 http://hn-karma-tracker.herokuapp.com/month/may-2013 2717: http://hn-karma-tracker.herokuapp.com/month/june-2013 http://hn-karma-tracker.herokuapp.com/month/june-2013 973+: http://hn-karma-tracker.herokuapp.com/month/july-2013 http://hn-karma-tracker.herokuapp.com/month/july-2013 Perhaps it is a change-in-season thing? (biggest months above are February and June, although July looks like it will also be high.)