What is the purpose of Wikipedia's category system, and how should articles be properly categorized?

The purpose of Wikipedia's category system is to organize articles into thematic groups, making it easier for readers to browse and discover related content. Categories function like tags or labels, allowing users to find articles on specific topics or within specific domains. Articles should be properly categorized by adding relevant category tags to the bottom of the page. These tags link the article to corresponding category pages, which list all articles within that category. When categorizing an article, it's important to choose categories that are specific and relevant to the article's subject. Avoid over-categorization by adding too many categories, and avoid placing articles in categories that are too broad or loosely related. Articles should be placed in the most specific applicable categories, while also considering broader parent categories. The category system is hierarchical, meaning that categories can be nested within other categories, creating a structured organization. For example, an article about a specific type of dog breed might be categorized under 'Dog breeds,' which is itself categorized under 'Dogs,' which falls under 'Animals.' Proper categorization helps users navigate Wikipedia's vast collection of articles and find the information they are seeking more efficiently.