Amused at scoring so highly, I popped over to the overall leaderboard and discovered that I currently squeak onto it, at #100. Which I will presumably be knocked off from at some point, as I stopped caring at all about HN Karma when I hit 20,000, and haven't spent much time submitting stories on recently.
(Not that I cared deeply about my HN score. But when I like round numbers, so when I hit 17,000 I was then determined to make it to 20,000...)
Original post on Dreamwidth - there are comments there.