Comments are frequently used to ask more information to clarify poster’s problem and intent. This usually results in poster editing his question or in contributor changing his answer.
Afterwards the comment may become irrelevant because the commented sentence may have been deleted or changed in such a way that the relation with the comment is lost. In that case, it would certainly be better for site clarity and usefulness to be able to delete, at least, or edit the comment so that late readers are not upset by the “illogical” content of the comment.
Is there a way to edit/delete (one’s own) comments after the 10-minutes window?