Behaviour of an individual towards a community is a social issue, and you can't solve social problems with technology.

Well, maybe not actually solve them. But when speaking of community and social behaviour it's obvious that communication plays an important role. And technology plays an important role there. For example, to quote an idea by xdg, a Super Search is only a few clicks away, but people are lazy, or just don't think of it. And a ready made link that is only one click away would probably help to overcome these inconveniences.

I'd rather link How (Not) To Ask A Question fifty more times than giving anybody the impression they're required to read and accept our "terms of trade".

I'm half hearted: I'm all against giving the impression that there are any "terms of trade", but to me a post that deserves being redirected to How (Not) To Ask A Question is nothing (or hardly anything) but noise, and two or three replies redirecting there end up being noise too. So I'm all for anything that could lower the noise/signal ratio. Then I don't know whether any of the proposed solutions would be effective in this sense...