I discovered that some people had subscribed to a test feed I'd set up with Feedburner...I didn't think that that was public, and so made no mention of when I deleted it. I've since realized that that happened and discovered something a tad unsettling with FeedBurner, though not unexpected.

So, I'd set up http://feeds.feedburner.com/epicrisis and played with it. Once I decided to go live with feedburner, I also decided to move to http://feeds.feedburner.com/epcostello. Now, FeedBurner allows you to change the URL of your feed pretty easily. You have to confirm it, but once confirmed the new URL goes live. The old URL (in this case /epicrisis) goes dark. Users get an error in feedreaders, FeedBurner itself returns a page saying that there's an error with the feed.

There doesn't appear to be a way to redirect the "old" feed to the "new" feed, which I think is a flaw with FeedBurner.

The slightly unsettling thing is that I was able to create a new feed at the /epicrisis address, pointing to a different variation on the Atom file I serve for the preferrred feed. Now, it's possible, even probable, that FeedBurner checked to see what account is creating a feed which reuses a URL and verifies that it's the same account which had created the feed in the first place. But it's also possible that that's not happening. Now, I'm not really into testing other people's web applications for free, down that path lie litigation and frustrations and often little or no gratitude, so I don't know which scenario is at play here.

If you're one of the people who subcribed to the "epicrisis" feed, please update your subscription to the new preferred, I promise I won't change it again, feed: http://feeds.feedburner.com/epcostello.