On a lot of sites, the first section of the Help Center looks like this:
When I go to a site's help center it's almost always to find out what's on-topic there, because I'm considering asking or migrating a question. Leading with what not to ask seems odd to me, and I suspect that to someone not already familiar with SE it could be a little off-putting.
It's not always like this, though; here on MSE we get this, which I've seen on some other sites too:
That ordering makes a lot more sense to me. It's also consistent with the tour. (Maybe "how do I ask a good question?" should also be "above the fold", in the top five somewhere.)
Why the difference?
Can we either make the order consistent across the network and more logical, or give users or moderators the ability to change the order on their sites?