I have this same question – if anyone has an answer, it would be much appreciated.
Right now, I’ve simply put a post with a blank title and containing only an image, then inserted the post so that it comes between the posts I want to break up. Does that make any sense? So you get:
[Post]
[Image]
[Post]
And that looks okay for now. But if we can get a real fix, that would be awesome.
Edit: Another option is to go into the code to remove the “Read More” button. To do that, go into “posts_loop_template.php” and change the line that says:
<?php the_excerpt(); ?>
to: <?php the_content(); ?>
Then make sure at the end of each post you put an extra line or two of empty space. By removing the “Read More” button and including the extra space, you’ll have a nice gap between posts. See:
https://groups.northwestern.edu/parc/Wordpresss
But again, this is really a temporary solution.