Most administrators want to moderate blog comments by approving them before they are made public.  When a trusted individual leaves frequent comments, however, it is a really tedious process to approve the commenter again and again.

For those special individuals whose comments you trust, you can moderate their comment once and add them to the un-moderated commenter’s list. Any comments from individuals on the un-moderated commenter's list display immediately on your blog.

Don’t worry, if your un-moderated commenter suddenly turns rogue, you can take away the privilege at any time.

To approve a comment and add the commenter to the un-moderated commenter’s list, select Comments from the Manage Entries menu. Click the checkbox in front of that person’s comment and select Approve Comment and Add Commenter from the Select action drop-down list. Then click Apply.

Check out  Managing Un-Moderated Commenter in our help center if you need assistance.