I was thinking of adding an RSS feed to the webby... maybe for either forums (active topics) or the fornt page news items. Not sure yet. Basically tho, the RSS files are just XML.

Here is the wiki:
http://en.wikipedia.org/wiki/RSS_(file_format)

And a tutorial:
http://searchenginewatch.com/showPage.html?page=2175271

Just setup your site to dynamically create the .rss / .xml file whenever there is an updated new item or whatever you are using it for. Should be pretty simple to do in asp or php.

Example in ASP:
http://www.4guysfromrolla.com/webtech/031303-1.shtml

Example in PHP:
http://www.developer.com/xml/article.php/3113931

Other example links:
http://www.rss-specifications.com/displaying-rss-feeds.htm