Tags are similar to Categories, but instead of a list of words to choose from, you write them in a list (separated by commas) in the Tags Module of your post editing screen. They are generally used to describe your post in more detail.
For example, a post titled “Last Night At Burger King” might be filed under the “Dinner” category, but could have tags such as, “burger, chicken fries, chocolate shake, dr. pepper.”
We understand that it may be a bit confusing upon first glance (especially to new bloggers), so here are some common questions and answers that may help you out:
Is Tag the same as tag ?
Yes. Capitals letters do not change a tag. Blogging is the same as blogging.
Is there a limit to the number of tags I can have?
Yes, the sky. In other words, no.
Tag and Category Archive URLs:
If you publish a post attached to a category “food,” the URL will look like this:
http://blog.wordpress.com/category/food/
The same post using the tag “food” will look like this:
http://blog.wordpress.com/tag/food/
If you publish a post attached to a category “food” and with the tag “rice,” the URLs will look like this:
http://faq.wordpress.com/category/food/
http://faq.wordpress.com/tag/rice/
Is there any advantage to using tags or categories, or both?
No. There is no advantage within WordPress.com and external search engines using one or the other.
Do I have to use tags?
The use of tags is entirely optional (although each post must be attached to at least one category).
Are categories and tags hierarchical?
Categories can be arranged in a hierarchy. Tags, however, exist in their own right and have no set relationship to anything else.
