Any page which uses the list widget in the main body will be able to return the list content in a variety of different formats by adding the format query to the URI like so.
?format=(json|rss|atom).
To promote your RSS/ATOM feed you can add mark up to the page. e.g.
<a href='?format=atom'>ATOM</a> | <a href='?format=rss'>RSS</a>
Alternative methods may use auto discovery to find the rss feed.