Subject: Yes, I have encountered "good" author's notes.
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Posted on: 2010-06-24 23:21:00 UTC
Generally, breaking the fourth wall to speak to the reader directly isn't that good an idea; but quite a few good stories are written in a style that suggests the author is a storyteller, rather than simply an observer. For example, C. S. Lewis in The Silver Chair:
"After the meal they had tea, in tins (as you've seen men having it who are working on the road), and Puddleglum had a good many sips out of a square black bottle. He offered the children some of it, but they thought it very nasty."
It's not jarring; and it matches the tone of the story. The problem with author's notes isn't that they break the fourth wall; it's that they do so in a story that hasn't established that this is okay, either because the story is written as though it were being told by a storyteller
The other condition under which I've seen "good" author's notes is in a story that has already established a reputation for fourth-wall breaking for the purpose of humor. I remember, for example, a very silly story in which the author actually interacted with his characters; in that story, the characters heard the author's notes and responded to them. In general, though, that style only seems to match with humor and parody, and can't be used in stories that don't have some significant humorous element.