function photos_notes_add($photo_id, $note_x, $note_y, $note_w, $note_h, $note_text)
    {
        /** http://www.flickr.com/services/api/flickr.photos.notes.add.html */
        $this->request("flickr.photos.notes.add", array("photo_id" => $photo_id, "note_x" => $note_x, "note_y" => $note_y, "note_w" => $note_w, "note_h" => $note_h, "note_text" => $note_text), TRUE);
        return $this->parsed_response ? $this->parsed_response['note'] : false;
    }