A comment on a Facebook item (e.g. status, note, etc) that was removed by the author due to A) misspelling, B) stupid remark, C) awkward input, or D) other.
The result is typically confusion and several wasted minutes on the part of the one who was commented on or anyone who posted previously.
Facebook: XYZ commented on your note.
Me: ...where's the comment? Jeez, way to ghost post, XYZ.