This is a perennial gripe for some of us, I know, where posters post in Aibu "for extra traffic". Imho, it's a rude type of queue-jumping.
Today I've seen threads about music playlists, weaning, breakdown cover, job interview technique, train tickets to name but a few in Aibu.
I sometimes go though a spate of reporting threads (but wonder if I'm being a bit petty). When you report a thread, there is the option to report as spam. Would it be possible to have another button saying "report as not Aibu" or "in wrong topic".