Because the Feedcat RSS service appears to be broken (and has not updated the feeds here in the past week), we've switched over to Feedburner. You can access the RSS feed through Feedburner at:
Or, if you wish to use the site's direct feed, the URL is:
PS The Feedcat feed will still be available, if for whatever reason you still want to use it. Just know that it's a bit flaky in terms of updating.