Linkylinkerton adds a column to the table view of all post types that displays slug links that will work for this specific post including ID link and any old slugs.
Why? I ran into situations where I posted stuff and submitted it to facebook and during submission found an error. Once the error was corrected on FB I found they had cached the URL so I needed to provide a new one to update.
You can probably think of better ways to use this though.
