It seems to me that the casual visitor to our site would benefit from having some statement of what our community is about and how they should take the answers they find here. I mean more of a statement of site philosophy and not simply what is or is not deemed on topic. This could be couched in the form of a FAQ, but may in fact be better conveyed in prose. What I see coming up again and again is the issue of descriptive vs prescriptive approaches to grammar, and I think it is critical for newbies to grasp this early on as they peruse our site. A related issue is that of authoritative sources. If Wikipedia and the OED disagree with Merriam-Webster and Fowler's, who's right?
Would this be a useful adjunct?