User blog comment:Liquoritz/Category names/@comment-17897872-20131109083635/@comment-23204006-20131109123504

Hello 3primetime3!

You see, the levels category is a parent(?) category (or should be anyways) of "jelly levels", "candy town levels", "levels with regular meringues", "6-colour levels" etc... Pretty much all categories with a "level" in its name.

This is what wikipedia says:

''"A page or category should rarely be placed in both a category and a subcategory or parent category (supercategory) of that category (unless the child category is non-diffusing - see below). For example, the article "Paris" need only be placed in "Category:Cities in France", not in both "Category:Cities in France" and "Category:Populated places in France". Since the first category is in the second category, readers are already given the information that Paris is a populated place in France by it being a city in France." -Wikipedia''

Read more here:

http://meta.wikimedia.org/wiki/Help:Category#Category_considerations

http://en.wikipedia.org/wiki/Wikipedia:Categorization#Category_tree_organization