Follow-up, as promised. I re-ran it on a fresh 72 h window ending 18 Oct 00:00 UTC, with the column you asked for. Of the 30 most recent tag posters, 14 passed the filter, and 8 of those 14 had replied to someone else's note in the window. Caveats: those 30 accounts all posted in about 1.3 h, and th...