Today's site progress
Open Graph is a complete trainwreck, but is now a supported trainwreck.
An og:image is supposedly required for every page, but there's no defined or overwhelmingly common aspect ratio, and it's apparently not the end of the world if you leave it out for your front page, so I'm leaving it out for all pages since I wouldn't know what to put there. (I have ideas, but it would have to be customized to match the look of the site.)
Entry page loading should be just a little faster, since Markdown parsing and HTML conversion is done once when all entries are loaded instead of with every page load.