It works very well for me too.
Here's an example to put a rotating ad under each thread, just before the reply button:
(It took me a while to figure this out, so here it is for anyone else in the same boat)
Admin CP: Styles & Templates -> Style Manager -> edit template -> postbit templates -> postbit_legacy
......at the VERY END add this:
PHP Code:
<vb:if condition="$post['islastshown']">
<div align="center"><!--@vbbanners:0@--></div><br />
</vb:if>
Thanks for the great tool!