The trouble is bots or spammers won't read it or listen to that warning
I agree, but that wasn't the point I was making. I was pointing out the forum already has the ability to flag up when the most recent post is several months old - it's not lack of functionality that is allowing necrobumps as bluefirecorp_ suggested, but rather there are some cases in which they are appropriate. I should have made that clearer on my previous post. As we are all aware, spammers care not for reading rules and warnings.