Board Thread:General Discussion/@comment-5413643-20140312034528/@comment-366087-20140312061241

You add near the bottom of a *Category Page*  __HIDDENCAT__ , that's two underscores each side.

This will keep the category from appearing at the bottom of pages tagged with it, although Admins will still see it. Also some users will still see it depending on their User Preferences.

Caution should be used with hiding Cats. Categories, yes, even a buncha them, serve a useful purpose for contributors and they should be able to see them. HiddenCats are best restricted to Wiki Administrative purposes which casual users need not know of or have easy awareness of.