Hacker News's RSS feed is broken again
In addition, I'd be really happy if you could add a GUID (or other universal identifier) to each element in the feed; that way when the title of the post gets edited five times, NetNewsWire won't think it's a new item every time.
I really would suggest looking into using Atom instead of RSS, because it's simpler to just have one specific standard, instead of trying to meet one of the nine different RSS standards, but I can understand that this is a little more unlikely to happen.