The problem with aggregators like Digg/Reddit/HN is that anger will unite a mob quicker than discussion. Eventually you end up with an angry echo chamber populated with the worst sort of content.
HN opened my eyes to a group of problem solving people who could generate a discussion that was better than any linked article. Originally the commenter attitude was "HN vs the problem presented". This slowly gravitated towards "My solution to the problem vs. your solution" with the associated rudeness, arrogance, and appeals to authority. Now it's headed towards an "Us vs. Them" kind of attitude similar to r/politics. Where you're wrong just for your identity or associations.
HN opened my eyes to a group of problem solving people who could generate a discussion that was better than any linked article. Originally the commenter attitude was "HN vs the problem presented". This slowly gravitated towards "My solution to the problem vs. your solution" with the associated rudeness, arrogance, and appeals to authority. Now it's headed towards an "Us vs. Them" kind of attitude similar to r/politics. Where you're wrong just for your identity or associations.