[razzimatazz]

How about just Hacker News, expanded with some machine learning to determine the topics I would be interested in. My 'friends' or connections don't supply me with nearly enough of the posts and news items that catch my interest, whereas I trust HN to float up things of interest (and not pure trash), so can I just base my feed on your posts?

[cloudking]

Maybe you could use all the HN links you comment on and upvote as signals, classify the links into categories, then surface new links from those categories in a "for you" personalized HN feed. You probably need more signals to make it work well, like how much time you spend looking at those links.