This is the best widget you can have on your blog. This widget displays a list of random posts that belong to any category to which the current post belongs. This widget is displayed only on single post pages and the number of posts it displays can be changed.
Suppose the current post has two categories, namely, Widgets and Shortcodes. The related posts widget will display the posts only from these two categories. What’s more, it will display random posts every time, which increases the internal link strength and strengthens SEO.
See live preview of this widget in the sidebar.