The ability to create and to judge might well be separate. How many food critics are good chefs, and vice versa? Perhaps it's due to not having a horse in the race.
What's fascinating is that we have these people who contribute huge amount of content, like the review guy that's mentioned.
Some of these guys are even interactive. I've had programming questions answered by Jon Skeet, and it just boggles the mind how he can be so productive.
There's probably some specific life circumstances that have to come together for us to benefit from a guy like that.
For one, it prevents creating new accounts to downvote someone that pisses you off. For me personally, it means I downvote only for “adds absolutely nothing and is somehow harmful to HN community”. I probably upvote : downvote at 20:1 or greater.
When deciding if a comment voting system is good or bad, I look heavily towards the outcome, and secondarily towards the mechanism. I think outcome on HN is second to none.
- mandatory 60 second re-click to submit a comment, without edits
- mandatory 60 second re-click on votes after a rate threshold is exceeded
- multiple choice votes to express motivation, intention, feedback
- do not publish karma numbers
- publish "example threads" that show values being practiced, including dead links/comments examples
- randomly assign usernames every 12 months
- tags and tag feeds