Sorry for the spam, it seems client specific (RSSOwl). I tried another client and it was fine, then looked at the RSS flux and it also looks fine. I've been fo

Sorry for the spam, it seems client specific (RSSOwl). I tried another client and it was fine, then looked at the RSS flux and it also looks fine. I've been fooled by the fact that I only had the issue with HN but none of my many other feeds. My best guess is that you're using the HTML entity "/" instead of the straight character "/" for URLs. Somehow RSSOwl handles this fine in <link> elements, but not in <comments>. I'll submit the issue to RSSOwl.