I must have missed your thread. That initiative is exactly what I suggested here as well. I, too, believe that we can still recover some boards if all of us start taking part in them and don't just sit and watch. I agree with everyone saying that the spammers are too many in quantity and they won't let us succeed in this, but that should not be a reason for us to not do anything for it. You can't win a fight if you don't even fight, no matter how hard it is.
we can't say for sure that every junior member account comes here for just spamming. It would be unfair for the members who come here to contribute constructively. Although the fraction of such posters will be quite low, it would be biased if we let them suffer because of the other shit-posters.
I believe a member, who comes here not for spamming and knows what constructiveness is, can easily earn 10 Merits and then become able to wear signatures and not suffer at all. There aren't really a lot of them to be honest, maybe 5% out of 100%, and we should not leave the remaining 95% untouched only because it might affect the 5% a little. That would be unfair to the community itself.
Removing signatures for lower ranks would only reduce spam, but theymos already said that he wouldn't do it.