Randomize posts

Is there a way to display posts or pages in random order e.g "you may also be interested in"bla blabla without installing any new plugin?
Thank you in advance!!!

Hello there,

That’s goes beyond default features offered by normal WordPress system. To accomplish it you should use additional plugin – there’s nothing to do with theme’s code as it’s a really plugin territory. Visit the .org plugins directory where you could find the free one.