What are tags? Tags are terms used to refer to certain data. They are generally used to categorize, and organize data in a blog. Tags can be very useful because they help describe items which then make it much more easier for users to look for and eventually find information. Categories on the other hand help users group, and organize related information. This then minimizes the number of categories in blogs. Categories can then contain subcategories. Once should keep other users in mind when deciding to label a category. Categories should but not necessarily be labeled with names that make it easy for users to quickly identify the information they are looking for.