Please adjust your feed-reader to consume http://feeds.raganwald.com/raganwald. If you aren't sure how to do that, simply add this weblog again and your reader will pick up the new settings.
The started offering a service called MyBrand for free:
MyBrand lets you use your own domain name to host your feed instead of feeds.feedburner.com. It puts you in even greater control of your own content with FeedBurner and best of all, MyBrand is now free.
How can I argue with that? The new link redirects to their service.
Why not send a 301 status at your old address? Most feed readers will respect that.
I plan on doing that. However, as you point out, some readers, aggregators, and script won't catch that. And by then, it will be too late. So I post the human-readable request first, while leaving both URLs working.