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Livid 而且HN比reddit的downvote有一个更加好的设计：你不能downvote直接回复你的评论。
也就是说避免了吵架和downvote war的情况。至少缓解了。
其实要说HN最好的还是他的guideline
http://ycombinator.com/newsguidelines.html最喜这几条：
> If they'd cover it on TV news, it's probably off-topic.
如果都上了电视了，那么在HN上讨论这种电视都能上的事情简直太trivial了。
> If the original title begins with a number or number + gratuitous adjective, we'd appreciate it if you'd crop it. E.g. translate "10 Ways To Do X" to "How To Do X," and "14 Amazing Ys" to "Ys." Exception: when the number is meaningful, e.g. "The 5 Platonic Solids."
cnbeta上很多 10个XXX 系列新闻就大大降低了新闻的可读性。
还有
> If your account is less than a year old, please don't submit comments saying that HN is turning into Reddit. (It's a common semi-noob illusion.)
哈哈~~~