Some housekeeping: I recently discovered that loads of the page http://qntm.org/rss.php were taking an inordinate amount of time, and routinely timing out. On closer inspection it looks like that particular page, due to incompetent coding on my behalf some years ago (which is to say, before I lost enthusiasm for PHP), causes the entire qntm.org page database to be loaded at once.
I've replaced this with a new system whereby RSS entries are stored in a dedicated table rather than being loaded dynamically, and I can push updates to that table whenever I create or modify a page. From your perspective, there should be no perceivable change other than improved loading time. Obviously, defects go in comments. Defects that are preventing you from commenting should be posted to me or something.