4 ms·

The down arrow disappears after a period of time. Probably a day or so.

• petercooper 18y ago
  It's definitely less than 5 hours. The parent poster's post is 5 hours old and it's disappeared for me, but is still visible on yours.
  • dmoney 18y ago
    This one is currently 5 hours old and has the down arrow: http://news.ycombinator.com/item?id=186872 http://news.ycombinator.com/item?id=186872 It must be 5 hours and some change.
    • dejb 18y ago
      Interesting. I wonder if it the same for all users or if it depends on the number of votes a comment has received.