Here is a guaranteed way to eliminate almost all forum spam. Simply don't allow signatures for any forum member. The majority of all posts made on the entire forum are entirely for the purpose of completing bounty signature requirements. Guess what, legendary members can spam too, not just newbies. Eliminate all signatures and you eliminate all spam posts. It takes away the reason to do mass postings every week. However this will never happen, because guess what? The owners of this forum benefit from all of this posting because it increases their number of visitors and therefor ad revenue. The owners probably make a really hefty amount of money from all of their ad revenue. If they take away signatures, ad revenue would drop significantly. So there you have it.