[MilnerRoute]

This suggests a related question: What if Hacker News had its own "subreddits" dedicated to specific topics?

I've wondered if there'd be enough of a user base to have a few smaller subsets of the larger universe of submitted links. (It could be as simple as allowing links to be tagged -- maybe with sysadmin/programming/engineering "flair", to use Reddit's terminology -- and then having a way to re-focus the front page on just that subset of tagged links.)