If someone got scammed, we should all know immediately. Not whenever the next mod feels like coming online and looking at it. I feel posts shouldn't be moderated also - you can always infract whoever is posting out of place - but that can be argued since it's not as important.
If a scammer scams someone and they file a scam report and don't bother to leave negative fb, no one else will know until a mod comes on and approves the thread...this gives the scammer more free time to go and scam others without the other people having any knowledge to their previous scams. At least with threads being posted right away, people can at least see the scam report and not trade and be safe.