I've been noticing of late a lot of questions on Server Fault that have the close votes for 'belongs on superuser'. A number of these questions are not valid questions, and do need to be closed, but they're not valid because they're not questions, way too vague or just spam. They are not questions suitable to be answered by any of the 3 sites, yet people seem to just want to dump them on Super User.
I don't spend much time on Super User, so if they do end up there, it doesn't really affect me much, but it seems unfair to push these bad questions onto the Super User moderators to clean up. They're bad questions, it's obvious for all to see so close them as such, don't push them over to Super User, there's enough crap over there as it is!
I guess it's because Super User is newer and has a lot more question scope. You don't see bad questions getting pushed to Stack Overflow, because we know they would come straight back, but Super User's not going to complain. If a mod gets to the question before it's closed, then they generally close it with the right reason, but where it's user closed often 1 or 2 people will pick the Super User reason, and the rest will go along with the crowd, until it has 3 votes and it's too late for the last 2 votes to tip the balance.
Is there any way to stop this– do we need more education, more moderators to overrule this, or just have to leave it and let SU deal with it?