An answer to a question popped up recently that gave instructions on how to configure certain settings on PHPBB.

http://moderators.stackexchange.com/a/378/148

So, to preempt "How do I destroy a user from my {forum backend name} system" type questions, would we consider these to be on-topic for this site?

It could open the door to lots of software support queries, but they would be specific queries from moderators wanting to know how to do a certain mod task, which may well be on-topic in general.