Not sure if anybody will want this, but will post it in case they do.
Basically just an autopager script (made and tested in chrome; not tried in FF). Couldn't find anything like this already posted so I thought I'd go ahead.
If you use autopager already, I'm sure you'll already know how to import it.
XML code:
<autopager>
<site>
<urlPattern>http://shoutbox.menthix.net/*</urlPattern>
<owner>SpunkyLM</owner>
<quickLoad>true</quickLoad>
<contentXPath>//div[@id='container']</contentXPath>
<testLink>http://shoutbox.menthix.net/latest.php</testLink>
<linkXPath>//a[contains(text(), '»')][1]</linkXPath>
<desc>Messenger Plus Forum</desc>
</site>
</autopager>
Works on all forum/sub-forum pages, latest posts and search results. I might be able to knock something up for the spam box too
EDIT: I've just noticed the information area in the top right (name, last login, PMs etc) only shows on the first page. Don't know why though...