In this video tutorial, you will learn how to “unpublish” or delete a blog post on your website using WordPress.
Generally I advise to leave old blog posts published since visitors may find you via the search engines. Plus, it can take months for old links to be automatically removed from the search engines. You don’t want to miss a potential prospect because he/she had a poor user experience with a broken link in their search results. Ultimately you’ll need to decide what you are most comfortable with.