Seriously though, I assume the ignore list means you do not see their posts at all?
What happens if someone else quotes them?
And how does the thread deal with post numbering?
Mids, your an Administrator, albeit an elderly one. Okay, ancient. Therefore I will explain to you functions of the forum entrusted to your gnarled claws.
Ignore doesn't get rid of posts from persons you're igoring, it just doesn't show them. Instead of the post, you see a notification that you are ignoring this user. You do have the option to click to see what's in the post anyway, if you're so inlcined, but by default it's not visible.
If someone else is quoting that post, you'll be able to see it. It ain't that smart, unfortunately.