Using groups or categories for your blog entries can make it much easier for visitors to explore writings on things that interest them.
Most bloggers have a broad interest range and their blogs tend to be about varied things, not just one theme.
Even if the blog is about one topic there are many different things about, eg. a blog about politics can have categories about community, political leaders, debates, elections etc.
When you’re starting out you don’t have to think of all the categories or groupings the blog will have, they can evolve and reflect the organic nature of your blog.
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