Every day we get quite a few questions which are closed almost immediately by our vigilant moderators for being duplicates or off-topic, for example the very common network mask, home network, and hardware recommendation questions.
Many of the people asking take the trouble to sign up, and write out their perfectly reasonable question without knowing they're in the wrong place for that question, which just wastes their time.
The "Ask Question" button is very prominent. The "What to ask" post is three clicks away (and I know exactly where it is.) It is no surprise we get off-topic questions.
Is there any way we could put some very prominent link in the red box which takes to an article called "First post? Read the topic guidelines" (or something similar)? I think it would really help.
Edit: Failing that, perhaps we could even put a tagline on the masthead to tell people what it's about. (Any SE guidelines against that?)
Kind regards to all