To the three people who reported that the xml:base attribute didn't have the scope we wanted it to have: Thanks very much for doing that! Sorry it took so long! Apparently our feed reader supports non-standard behavior in that regard, so it worked when we tested it. Oops. Please try clicking through from the Atom entries to the HTML pages and see if it works for you now, and let us know if not.
To the person who reported a duplicate UUID: Sorry, we took a look but they all seem to be unique here. Something weird on the receiving end possibly?
We have an actual post in the works, which is nice. We didn't know going into this whether we'd find ourselves spontaneously wanting to post to it, but apparently we do. Maybe this week! There's a draft but it's messy.