A few tools that help you watch changes in html pages, even these pages do not have RSS: they make a feed out of a page.
- Page2RSS – Create an RSS feed for any web page (can work without login).
- html2rss – Convert a HTML web page to a RSS feed.
- RSSxl Beta – RSS Generator (now defunct).
- Feed43 : Convert any web page to news feed on the fly (needs login).