You can separate your posts in your postbit. I have the following code at the top of my postbit so that I can create a space between each post.
Code:
<!-- spacer between posts -->
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td width="100%"> <br> </tr>
</tr>
</table>
<!-- /spacer between posts -->
Here's a sample of how it renders in a post [
link]