The welcome message in the sidebar says currently:
This is a collaboratively edited question and answer site for WordPress developers and administrators. It's 100% free, no registration required.
Got a question about the site itself? meta is the place to talk about things like what questions are appropriate, what tags we should use, etc.
Should we change that to help new users to decide if their question is on topic here?
Suggestion for the first sentence (please improve, English is not my native language):
This is a collaboratively edited question and answer site about WordPress development and administration.