While browsing in FeedDemon, you may notice the 
auto-discovery icon at the bottom right of the status bar. The auto-discovery icon appears when the current web page contains a link to an RSS feed. In most cases this will be the RSS feed for the site you're visiting, but some pages link to feeds of related web sites - which provides a great way to find other feeds of interest.
Clicking the auto-discovery icon displays a menu of the URLs for the auto-discovered feeds. Clicking a URL enables adding the feed as a new FeedDemon channel.