VBulletin question

[Twycross]

I was browsing through the members list, and I noticed that some of the 'last visit' slates are marked as N/A. I know this doesn't mean that the poster has been banned, as a good chunk of the staff is marked N/A. I went through my user control panel and couldn't find any option to hide that data from public view.

I am curious as to what this means. Could one of the VBulletin gurus enlighten me?

[tyme]

Invisible mode.

[Twycross]

Thank you. :)