That would be really really useful. This is a problem with a lot of SE sites, but let's fix this here.
If real estate on the front page is the issue, how about a small link: "scope of this site"?
That would be really really useful. This is a problem with a lot of SE sites, but let's fix this here.
If real estate on the front page is the issue, how about a small link: "scope of this site"?
In a way, it is. Users who visit the site's front page and are not logged in see a very prominent banner:
that points them to the site tour. As part of the tour, we give a high-level overview of what kinds of questions are appropriate to ask and what kinds are not.
If a visitor wants to find out more details about what kinds of questions are appropriate, that information is a little more difficult to find. Perhaps we should consider linking to it from the tour page. People probably won't read the links at first, but the fact that there are links may at least suggest that there are more details to be read.
One could make the argument that it would be useful to show this banner to logged-in users as well (who are interested enough in the site that they have actively chosen to make an account). I don't believe that is a good use of the available space on the home page though.
I suspect that it is not on the front page because space on that page is valuable, and most people don't have cause to reference the scope on a daily basis.