Categories and tags are the structure of your site and blog. While categories are the basic structure, tags then are the reference library.
This article a more detailed guideline and explanation of the use of categories and tags including wordpress.com and it’s “reader” application.
Tags and Categories.
I first published an infographic that laid out very simply the fundamentals of tagging (particularly in WordPress). Here for the next article, I have compiled parts of different WordPress.com support documentation to show you how WordPress specifically defines and regulates tagging.
Categories vs. Tags
Once upon a time, WordPress.com only provided a Category option.
Categories allowed for a broad grouping of post topics, but when you wanted to describe a post in more specific terms, more categories were required. That led to very long category lists inside the blog and very long lists in Categories Widgets.
So we now have tags, too.
The Tags section of your Reader displays the subjects that are most popular with bloggers on WordPress.com.
-Selecting photography, for example, will display all the most recently published posts that have been tagged or categorised as “photography.
-You can browse any tag that’s not listed, including specific people, places, and things, using the search box in the corner. Try adding your hometown, favourite musician, or hobby to try it out.
-Click Follow to add a tag to your reader so that you have quick access to all the latest posts about that subject.
-By adding 15 relevant tags and categories (max in total) to your posts before you hit publish, your content will appear on those tag pages.
-Tags and categories should be used to summarise what each post is about. For example, if you’re posting a recipe for apple pie, you could tag it with “recipe,” “apple,” and “pie.”
-If you’re having trouble choosing tags, try thinking about what tags you would search for if you wanted to find a similar post.
REASONS WHY YOUR POST IS NOT IN THE READER:
-You are using too many categories or tags. In most cases, there’s no need to assign more than a handful of tags per post. If you use more than 15 tags and categories (total), your posts will not appear on tag pages (because you don’t want to see irrelevant content showing up there, and neither do we).
– Your blog is private or hidden from search engines. Check the Settings -> Reading tab of your dashboard. You must choose the first option, “Allow search engines to index this site,” for your blog to be included on tag pages.
-Your blog is mature or offensive. If you regularly post material that is offensive, not safe for work, or not suitable for minors, we might have flagged your blog as mature. Mature blogs are excluded in the tag listings. Please contact support for questions in regard to your blog being unfairly flagged as mature.
-You are misusing the tags feature. If you’ve been regularly using the “knitting” tag on posts about Britney’s latest scandal, your blog might have been excluded from tag pages for a while.
Other examples of misuse include:
-Using misleading or irrelevant tagsMarketing material, duplicate or low-quality content.
-Attempting to push a post to the top of the tag results by changing the publication date multiple times
-Check our policies regarding quality content and try to use appropriate tags and categories. Your blog will automatically be re-included on tag pages after you have regularly posted with appropriate tags for a while.
-Your blog is very new. It can take a few days before new blogs are included on tag pages. Brand new blogs might not have enough posts for us to accurately determine whether or not they’re spam.
-Your blog is set to a language other than English. You’ll need to use a different URL to find your post.