I’ve posted before on email to RSS services, well SocialMail is the newest on the scene.
Use a SocialMail email address to sign up to any websites email alert, or just create your own email feed and use it as a discussion group, or as a support desk email…any way you use it what ever gets sent to that email can be read as a feed.
Interesting…re-syndicate the feed of your support email or a discussion group to a website.
Also check out InstantFeed, another RSS to IM tool, similar to ZapTXT, and Rasasa.
Big in Japan have a whole tool kit…MailFeed (maybe an email subscription service for your feed) and FeedVault (OPML Reading List save/share) seem interesting…an oldie is FrankenFeed (RSS splicer).