An easy way to test certain theories about improving Code Review's demographics would be to run ads on Stack Overflow.
I ask because I would like to form an opinion for myself about how hard it is to add FAQs. A specific answer to this question will allow me this.
A "where should I ask?" FAQ with a list of other Stack Exchange sites to which Code Review questions not on-topic could be migrated would be a good idea.
Can just anyone make a Help page or an FAQ page?