The On-Topic section is really the core of what defines a site. In the former FAQ sections, it was prominently placed and easy to identify. Now in the Help Center, it is buried half way down and 3 columns over. I knew what I was looking for and it still took me several minutes to find.
Such a key piece of information about what defines a site should be much more readily accessible. I propose that the On-Topic section should be somehow worked in to the main Here's How It Works graphic or at least directly on the Tour page.