Welcome to a weird future! RetroZilla didn't know how to handle the admin panel, but Firefox ESR 52.9.0 on XP can do it just fine. This makes it a fairly viable solution for blogging on XP and Vista, and possibly even 2000.

Writing themes, as far as I can tell, is as simple as WordPress; there's a PHP "loop" for post formatting, and I think you can do custom HTML per post type (which there's basically every post type that Tumblr has, which is nostalgic). I suppose this would've been really good for the scrapbook vibe I originally wanted for the Scratchpad.

Obviously the built-in themes are only semi-functional on RetroZilla, but if I wrote HTML4 ones, they'd work just fine. All the PHP preprocessing is done on the server, after all.

Still unsure if I'm really gonna replace the journal with this, but it's fun to toy with!

(EDIT: I have discovered that HTMLy has no database! It just enumerates Markdown files in a certain directory on my server, meaning all I really need to do is drop text files in that folder and bam, new post. No need to even bother with the editor. In fact, this edit was done without even touching the editor. Genuinely lovely. This massively increases my chances of sticking around with HTMLy. Set it and forget it.)