I wrote this short script that will check the site for me:
The idea is, every 5 seconds, it makes a new request to check the new posts page. If it detects a difference in the latest new post, either in post title or reply count, a javascript alert is fired, and the page redirects to L19. The big difference between this and me manually checking is that the javascript alert steals focus, so I can keep the browser minimized and do whatever work I want to do. But whenever there's a new post, the window pops up automatically.
Not really sure if this is helpful to anyone else, but maybe it can help me to calm down a little bit, do more work, and stop checking the site so often (well, at least delegate that to the script).