If you are in Safari for Macintosh, you can press command-D on one of these pages to bookmark the feed. You can put it on your Bookmarks Bar, Bookmarks Menu, or any bookmark folder, and it will show you the count of unread new stories or new threads. Click the bookmark to see what's new.
Facebook seems to have an insane number of RSS feeds, you can subscribe to my (very interesting ) status updates if you want, so I guess it could be done.