@EliahKagan: As a moderator, I can edit comments after the edit window has passed.

@EliahKagan: It appears so. Updated.

Very nice answer. That's an excellent description of the problems facing traditional forums, and how the pieces of Stack Exchange (answers/comments/chat) work together to solve those problems that cause other systems to inevitably break down. I couldn't have expressed it better myself.

As a side note, if you would like to provide guidance for a new users, it should be left as a comment so everyone benefits from the advice.