Save comment content in a cookie in case something goes wrong while posting.
Comment Saver temporarily stores the content of comments in a browser cookie just in case something goes wrong while submitting the comment. For example, if the user forgot to include their name and email address and those fields are required, the comment may be lost on some browsers. When the user returns to the comment form, Comment Saver will automatically populate the comment box if the cookie is still set. It will remove the temporary cookie once the comment has been successfully submitted, or after one hour.