Some more conditions you can add to your list:
Show only if vBulletin notices are not shown
Code:
<vb:if condition="!$show['notices']">
</vb:if>
For use in template navbar: Show only in Forum ID X
Code:
<vb:if condition="$GLOBALS[forumid] == X">
</vb:if>
But I have one question.
Is there a condition to show something only in the second post of each thread and page?
Something like "isfirstshown" just for the second post?