...and I guess also that I didn't break the RSS feed.
The way this forum works is weird. It's all static files. So once something is in the RSS feed, it's there forever, except for a small Perl Storable database which stores its contents so that it can be re-created without having to parse the RSS feed. So I took a hex editor to that, and hopefully didn't break it in the process, otherwise I'll have to delete it and start over with an empty RSS feed.
I really should rewrite this forum, but I don't care...