The Super User site has a [community-faq] tag, description of which is:
These questions have been selected by the community as high-quality posts with generalized answers to questions which come up frequently on Super User. They are more canonical answers which can apply to many different variations on a topic.
While I appreciate that Stack Overflow has a FAQ section, this is concerned with how to ask a question, rather than providing canonical answers to frequently asked questions.
Given the frequency of duplicate questions on Stack Overflow, the volume of questions on this site, and the volume of moderator activity; would not inclusion of such a facility on Stack Overflow aid all these problems? If there is such a facility already, could it be made much more visible and accessible, as I could not find an equivalent when searching Stack Overflow?
I don't see this as exactly the same as community-wiki questions and answers, as while these are community assets, they do not necessarily have the canonical quality, and indexed availability of this requested facility.