Is there an online tool that will provide an RSS feed of a newsgroup or public mailing list thread? I tried (briefly) to use feed43 to generate a feed of a Google Groups mailing list thread, but it seemed like I needed to basically write the details of the scraper myself and that they just provided the framework. Which is neat and all, but I would expect that sort of thing to already be done for a site as institutional as Google Groups.
I tried doing this by using Google Reader's ability to provide an RSS feed for an arbitrary page, but I couldn't find a way to get it to provide updates to the thread page: since the page was from a list, it just asked me to confirm that I wanted to add the entire list.
Is there a better tool available for this sort of thing?
