Wikinews:Criteria for Categories
The purpose of this guideline is to lay out clear criteria under which new categories may be created; when they should be created. And, cases where the creation of a category is clearly inappropriate.
Please bear in mind that Wikinews employs the DPL extension! This makes a significant number of the categories in existence on other projects, such as Wikipedia, unneccessary. Creation of such – effectively – creates additional maintenance work.