Ask HN: When do down arrows appear on comments?

I was under the impression it was 200 points, but I see now it isn't. Any ideas?

You can never downvote a reply to one of your comments, or a comment to one of your submissions.

There is a karma threshold for the downvote to appear. It is currently at 500 karma points.

http://news.ycombinator.com/item?id=1853529

I was tempted to say "Here, let me Google that for you" because it's not too hard to find with a search. I resisted, but let me ask - what searches did you try before you asked?

Silly me, I tried to use HN search and I found 200 points. That's obviously not true... so thought I would ask.

I think I have heard it was 500 some time ago. I have checked at the FAQ and it says "There are no down arrows on submissions. They only appear on comments after users reach a certain karma threshold." so it's not clearly stated.

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