Dave Winer issues a call for an RSS redirection module,
Also, I realize there’s a need for a RSS module for redirection. . . . Not everyone can control their server enough to program an HTTP-level redirect.
Okay, it may not be a particularly sexy feature, but Conversant has an excellent redirection page type.
Recently, for example, I moved the location of several of my RSS feeds. Then I simply created a new redirection page with the same name as the old feeds, and filled out a form telling the system the URL to redirect to.
The redirect is seamless to RSS aggregators. I am still using the old URL in my Radio subscriptions, and the feed keeps being updated regularly with no problems.
Redirection may be a relatively small feature, but it certainly has saved me from myself numerous times.