User blog comment:WerefoxNZ/Stream-lining categories/@comment-4058379-20130328081837

You did it in very wrong way. No need to add higher category along with lower category.

If article have Category:Assault Rifles, no need to add Category:Weapons, Category:Infantry, Category:Content and Category:Browse, to article. Because Category:Assault Rifles alredy have Category:Weapons, and it's making category tree.