At DMXzone, we've launched our RSS feed. RSS stands for Rich Site Summary, and is a way of putting out content in a pre-defined way so that anyone else who wants to can take the text file and automatically import it into their own site. If you want lots of detail, here's the full specification, but in order to use someone else’s RSS feed in your own web site, all you really need to know is that an RSS feed is text, but the data in it is a small subset of XML. DON'T PANIC! (I always say that when someone sees the 'X' word). RSS isn't nicknamed Really Simple Syndication for nothing).
Most web developers write a script in their preferred scripting language that grabs the feed at a pre-defined interval (depending on how frequently it’s updated by its author) and then put it in their website using ASP/ PHP (or whatever). Because it’s just text, the typeface, colours etc are determined by the HTML or CSS of the site that is consuming the feed. (If you are running a PHP-driven site, Matt Machell has a very simple tutorial with all the code needed use someone’s RSS feed in your site.)