It also hides what was being "shortened". If I find expired url science.com/astrologist-dicovers-alien-life I know who owned it and can guess what the content w

It also hides what was being "shortened". If I find expired url science.com/astrologist-dicovers-alien-life I know who owned it and can guess what the content was. Doesn't happen with random characters or 3rd party short-names.