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Also, this post jumped from #20 on the front page to somewhere below #360 in the time it took me to write my other comment.

Stupid question probably, but how did you guess its ranking came down to #360. Is there a feature of HN I am missing?

Clicking the "More" link (bottom of page) will give you the 30 next ranks. Repeat 10 more times to see #360.

This site will give you a graph: http://hnrankings.info/6919666/