One of the essential components of the FAQ will be the list of on-topic and off-topic subjects for questions.
This question is an overview of a set of meta questions (one per topic-area, based on the topic areas at Analysis of questions to date) that I hope will focus the discussion and allow us to come to a consensus, at least as far as we are able at this time (new thoughts will always emerge).
I'm splitting it into a number of questions to keep the number of answers to each manageable and will generate cross-references between this overview and each question to aid navigation around the set.
For each question, I'll generate an initial set of answers along the lines of http://meta.english.stackexchange.com/questions/273/what-questions-are-on-topic-and-off-topic-here.
Voting on each answer should indicate whether it is on-topic (positive vote) or off-topic (negative vote). I'll indicate my view in the text of my answers (as I won't be able to vote) and hope it's acceptable to take that into account when reaching our final conclusions, although it will only matter for questions that finish up in the range of 1 to -1 votes. If you come up with an additional example of an on- or off-topic subject, please follow the same convention.
I suspect along the way we'll also get into some discussion of the characteristics of 'good' and 'bad' questions under each heading, which is not a bad thing but I'd prefer that it didn't dilute the focus on the on- and off-topic question. Once we've clarified what's on topic, we should have a better basis for generating guidelines for 'good' on-topic questions.
One thing we still need (as far as I'm aware) is an overview of the meaning of the terms "Genealogy" and "Family History" as an umbrella for the whole on-topic thing, so I'll raise another meta question where we can work on this.