You don't have to use the "Next" or "1", "2" etc buttons at the bottom of the table of employer names.  To quickly find an employer, enter the first couple of letters of the employer into the search box.  This acts like a super filter and will quickly reduce the entire list of employers down to those who share the letters you've entered.

The list that is presented to you only contains those employers for whom comments have been made.

If you are just "one of the staff" on the site, you can only edit or delete comments that you entered.  

On the other hand, the site administrator can edit/delete any and all comments, regardless of who wrote them.