The time has come.
You can now freely generate an RSS feed for any YahooGroup or similar email discussion or distribution list (Topica, Listbuilder, Sparklist, Lyris, Majordomo IMN, etc.).
The process is very simple, it is free, and it may take at most three minutes. (I refer to Yahoogroups in my example but this can be done with any mailing/discussion/newsletter distribution list).
One of the eeriest experiences of modern life is thinking something one has never heard of ought to exist, entering it in Google, and having it appear at the very top of the results list. Very strange and oracular.