I've been slogging hard all day (mostly battling mod_rewrite), and I've managed to add several new features to the website.
The CSS has been spruced up, I've added a little bio and Creative Commons license. I've reorganised some of the backend a bit, and added threaded comments. However! I think the largest thing I've done is to convert the entire site over to SEO-URLs: search-engine-friendly URLs, courtesy of mod_rewrite.