Of course, there's the question of "Where do the curators get their news".... HN contributions don't just materialize - they're often posted by people who scan

Of course, there's the question of "Where do the curators get their news".... HN contributions don't just materialize - they're often posted by people who scan large amounts of material. Via RSS, usually. Then again, those users are certainly savvy enough to use RSS without a browser button.