Good grief. I hope that you meant 60 seconds, but even that is way too long for most of us. This forum doesn't seem to have a problem with spam or cross-posting (he says after just posting the same thread in two forums).
What would be good is an option to delete posts made in error, and a 5 minute time limit for editing posts.
but we can't stop them posting the same thread in different forums. We wouldn't want to do that really, because sometimes people post in the wrong forum in error, and then post again in another forum area. We would be throwing the baby out with the bathwater, so to speak.
I don't think these occasional advertising/spam threads are that much of a problem - we usually get rid of them fairly quickly.