Yahoogroups RSS 
“It’s a trivial hack but I created a web page that will help you create URLs for RSS feeds from Yahoo Groups mailing lists.
It’s hosted over on the archive at: http://feeds.archive.org/misc/yahoogroups/
The RSS generation feature of Yahoo Groups requires that the list’s archives be publicly readable. If the archives aren’t publicly readable then you can’t get RSS from them without some cookie juggling.
I keep about a dozen of these feeds subscribed in my aggregator. I came across several new lists recently and found it rather tedious to create RSS URLs for them. This greatly eases the process. Give it a try and, as always, feedback is appreciated.” [Syndication News from Bill Kearney]
Thanks, Bill![The Shifted Librarian]