I think the rise of social bookmarking sites, especially Hacker News, and to a lesser extent places like Reddit probably does mean that a lot of people who woul

I think the rise of social bookmarking sites, especially Hacker News, and to a lesser extent places like Reddit probably does mean that a lot of people who would be leaving insightful comments are spending most of their time discussing things in places like this rather than in the comments section of most blog posts.