I read all the answers, and I'm now convinced that there's nothing keeping this site from eventually going down that same path. Death. Taxes. Gentrification.
Yes, the majority of people here just support banning, harsher punishments, and locking out all outsiders. Those are very poor solutions! #1 and #2 cause strong negative backlash. As you would learn from marketing theory, a user that you have personally screwed with will likely cause 20x more damage to your brand than your best users improve it. #3 Locks out a lot of useful expertise. For sure, HN could use a lot mor…
I'd say that a jackass active on the site is more damaging than one banned. If you ban someone, you have only upset one user. If you allow a spammer/troll/flamer/etc to continue unchallenged, you have upset all of them.
The thing with online communities is, this is Web 2.0, your users are your product. The better the users, the better the product. If you have a good community, smart, helpful people will be attracted and will thus improve the community. If you have a bad one, they will be warded off. Scum breeds scum.
Think broken window theory.