Easy and simple to install and use, the plugin will search for and delete duplicate posts and pages with duplicate titles. You can choose to leave either the first or the latest post behind and delete the rest. All post meta is also removed.
You can run the plugin manually or let it run automatically every hour, cleaning up and sending you details by email.
This free plugin for WordPress was first released September 2nd, 2009 and deletes duplicate posts on your website.