The Merit system has been with us for six weeks now and is clearly having some success in reducing the spam. It is now very hard, if not impossible, for account farmers to provide a constant supply of high ranked accounts. This, of course, is good news for any of us who have become tired of finding any interesting content quickly buried under a pile of shitposts.
What this hasn't addressed is the large number of accounts already in the hands of shitposters. Let's be honest about what rank is all about - signatures and the ability to gain income from them. The ability of someone who is already in possession of, for example, a Hero account (or 10) to continue to get paid for every shitpost they tack on the end of a spam megathread has not diminished or been restrained by the Merit system.
Some campaign managers have taken the initiative to make minimum Merit requirements compulsory to join their campaigns but those managers were already the ones with high standards. They were not the problem, it has always been the managers that just blindly accept the first x hundred people to apply and pay them regardless of the spam they produce.
I have noticed that these spammers are very easy to spot now, they are the ones stuck on 100, 250, 500 or whatever merit number they were initially given. They haven't managed to gain one single Merit point in the last 6 weeks.
So to my suggestion:
Amend the forum to hide signatures of any account that hasn't earned at least 1 Merit in the last 2 months.
This will bar them from getting paid to post and not have any negative impact on anyone making even the tiniest contribution to the forum. Nobody loses their rank and even if someone is away from the forum for a while they can quickly get their signature back.