You can't get away from human judgement. If you stop relying on editors' judgement, you'll end up with spam and people gaming the system. To fix the spam, the

You can't get away from human judgement. If you stop relying on editors' judgement, you'll end up with spam and people gaming the system. To fix the spam, the process of generating the feed will have to be tweaked. The nature of these tweaks (not to mention the design of the original algorithm) reflects the judgement of the human programmers.