In the case of Can I create a user-specific hosts file to complement /etc/hosts? , the question was asked and answered some time ago. After a while, the landscape in which the question was asked has changed and a much better, more current answer has emerged.
The user that asked the question is not really maintaining the question. (unaccepting the old answer and accepting the new, better answer)
As-is, links from Google (and others) hit a question/answer for which the "right" answer is ambiguous in spite of the accepted answer no longer being right and the right answer just beating the pants off the accepted answer's vote count.
While a Google link follower should be able to sort out that for the link I provided, the old answer is now stale and that the more recent, highly voted answer is more correct, there are other unmaintained questions for which this is far less clear.
Is there any mechanism for dealing with this?