I was looking at THIS POST and the first comment to the question caught my eye. The user who made it seems to have 1 reputation. The comments help page says that you need 50 reputation to be able to comment on other user's post. How was this user able to post that comment?
1 Answer
That user submitted the comment as an answer. It was flagged as not being an answer so I converted it to a comment on the question itself.
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4... which is to say yes this situation can occur, but it requires either a moderator's intervention or somebody who commented and then lost a ton of rep (e.g., make comment, receive spam flag)– Jeff Ferland ModCommented Oct 1, 2013 at 17:25