The key thing is good posters are able to handle their greediness to hunt for maximum money with max post number.
What about Yobit, they are incentivising spamming behaviour with setting cap at 20 posts per day. If they are interested in quality, cap would be much lower, but instead they decided to do the opposite. They are the key.
So no wonder that majority of participants are spammers, just look at this list
https://bitcointalksearch.org/topic/yobitcryptotalk-signature-campaign-participants-5188149
The campaign now has a manager, I think there won't be much spammers in the near future. The maximum is 20 but there is no minimum, you get paid even for a single post. What incentives spam is not the maximum number of posts by day but the lack of a good campaign manager, if the maximum os low people could just use shills to post more.
Before start of this campaign you werent active for 10 months, and now suddenly you have urge to write here? You see this forum only as source of income, and what is even more funny, you are advertising forum that wants to be competition to bitcointalk.