I frankly never got into RSS until I started using RockMelt about a month ago. Now I use it all the time to tell me when there are new Hacker News post, etc. But unfortunately the only clickable link for the Hacker News RSS takes me to the story, which is often an external link. If I want to see the "discuss" of the story I have to manually go the website and find the post and click the discuss link. Perhaps RSS needs a more robust protocol that wouldn't require others to make their own API. Then I think browsers like Rock Melt might bring this new kind of RSS to the masses.
Google Reader displays a comment link, which I always click and then click through to the article if the link is still alive from there. That's a problem with a bad RSS reader, not RSS, or HN, who would actually be at fault here.