Below are examples on how you can control what is shown on these websites.
The External Data Provider also gives alternative feeds in commonly used formats. These are useful if you have external readers or a script to read them already. These feeds are available in XML, RSS .91, RSS 1.0 and RSS 2.0 so it should fit a wide variety of readers. The system defaults to RSS 2.0 so if you leave off the type, that is what you get. RSS 1.0 and 2.0 feeds will include HTML markup and attachments unless &nohtml=1 is added to the feed url. Many aggregates support HTML markup and so posts will appear close to how they would appear when viewed on the forum.
The URLS to access these feeds are:
XML - www.yourdomain.com/forumpath/external.php?type=xml
RSS - www.yourdomain.com/forumpath/external.php?type=rss
RSS 1.0 - www.yourdomain.com/forumpath/external.php?type=rss1
RSS 2.0 - www.yourdomain.com/forumpath/external.php?type=rss2
You can refine the listings by specifying forumids in the path. For multiple forums separate them with a comma. This will limit the feed to the specified forums only. (Below example uses xml as type, but it works with rss, rss2, and js too)
Threads will be returned in descending order based on the date of their creation. Description information will be returned from the first post of the thread.
If &lastpost=1 is added to the feed URL, threads will be returned in descending order based on the date of the last post of the thread. Description information will be returned from the last post of the thread.
If vBulletin Options > External Data Provider > Enable Podcasting is enabled, the first attachment of the post will also be returned within an <enclosure> tag. The enclosure tag is used within iTunes and other RSS aggregates to allow files to be downloaded from the feed.