This is a maintenance category, used for maintenance of the Wikipedia project. It is not part of the encyclopedia and contains non-article pages, or groups articles by status rather than subject. Do not include this category in content categories.
This is a tracking category. It builds and maintains a list of pages primarily for the sake of the list itself. They are not part of the encyclopedia's categorization scheme.
Pages are typically sorted alphabetically by the unknown parameter that is used, e.g. pages using unknown parameter
|foo= will be sorted under "F". The name of the page is typically used as a secondary sort key.
Pages in category "Pages using infobox YouTube personality with unknown parameters"
This category contains only the following page.