I'm trying to get all of the messages in this forum (not the rest of the site)
but i Can only get it to include a single page.

Here's the site:
<http://paizo.com/paizo/messageboards/paizoPublishing/rpgsuperstar/general>

And here are my scan rules
+*.png +*.gif +*.jpg +*.css +*.js -ad.doubleclick.net/*
-mime:application/foobar
+*/general*
-*Special:*
-*Talk:*
-*User:*
-*&action=*

and force old http requests is checked.