These allowed the broad grouping of post topics but when you wanted to describe a post in more specific terms you had to use more categories. That lead to very long category lists inside the blog, very long lists in sidebars. It was also confusing in that what we said were categories others said were tags.So now we have tags as well.Tags are similar, but instead of a list of words to choose from, you write them in a list (separated by commas) in a text box below your post. They are free form words and generally 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 like, “burger, chicken fries, chocolate shake, dr. pepper”.