I've added a link tag to my pages that includes the XML source, if available. Read the RSS auto-discovery article by Mark. You can also get the feed for the page you're looking at by clicking the xml icon in the navigation on this site.
For those of you looking for a syndicated new reader, try AmphetaDesk. I've tried many, and it beats the rest. Runs on nearly any OS. Excellent software, and easily approchable coders.