When a blog has a large number of posts, zeroing in on one particular post can be tricky for end users. Blog moderators can help them out by using Categories and Tags to organize their posts.
Categories allow blog authors to provide a custom organization scheme for their blog posts. Categories work best when they are used as a broad indicator of the topic(s) of a particular post. They work in conjunction with tags, which are best used to indicate details of the content within the post. When a post is created, the blog's categories are displayed underneath the text-editing field as a series of checkboxes.
Authors can select one or more categories to apply them to the post; any previously existing category is available, and authors can create new categories at any time by clicking “Edit Categories.”
On the blog page, categories are listed at the bottom of the post, next to the name of the post’s author. Readers can click on a category name to see other blog posts that have been assigned to the same category.
Categories can also appear in a blog banner element as a way to help users find specific blog posts that they're interested in.
Tags are another tool for sorting and organizing posts. As with categories, blog authors can create as many tags as they need, and can apply multiple tags to any single blog post. Again, readers can click on a tag to see other blog posts that have the same tag applied.
When creating a post, tags are listed under the text-entry area. Click on a tag to select it; selected tags are shown with an outline.
Tags are displayed as a Tag Cloud when activated in a blog banner element.
The more frequently a given tag is applied to a blog post, the larger it appears in the tag cloud. There can be as many as five different text sizes in the cloud.