I’m getting a lot of duplicate posts using wp-o-matic and if you are reading this, you probably have the same problem.

Instead of fixing wp-o-matic (that’s the developer’s job) I just changed my local wordpress to ignore posts with the same title.

Here is how it works :

1. Open up wp-includes/post.php in your favorite editor
2. at approx line 703 you will find the following line :
   if ($post_name_check || in_array($post_name, $wp_rewrite->feeds) ) {
3. After this insert a new line of code :
   return 0;
4. save (you did make a backup, right?).
5. All done.