There is no quick and easy way to find what are the topics of superuser.com, nor what is off-topic

The superuser.com/tour : gives a very (and too) bried information in its first paragraph as to what is the site's topic (and thus also what isn't).

In superuser.com/help : there is a questions mentionning a better description : https://superuser.com/help/on-topic

To me this is not really visible: I went to search for an "about" link on the front page, then went to re-read the /tour, then to /help, but I didn't notice that one answer straight away

Maybe someone could add a link to that question in the /tour first paragraph ? or maybe an even more visible "about" link somewhere in the top bar (or at least in the bottom of the front page?).

Or any suggestions you could have for a better way to make it known and visible (especially to new users)