Oh, brace yourselves, spammers is coming. I've been in Yobit campaign since 2016 and I remember how bad everything was back then until hilariousandco started to manage campaign and banned most of spammers from campaign. From what I see now, things doesn't looks good - I see plenty of users with 0 or very few earned merits or even with negative trust wearing Yobit signatures. And some of them definitely will try to hit 20posts/day limit. It's interesting how many slots for participants is available in this campaign.
I don't know what's with this campaign before but all possible effect that it might bring is huge spam to the forum. Greedy participants will surely try their best and force their limit just to make 20 posts per day even though the quality isn't enough to be considered as a Good quality post. Do campaign like this really allowed to run? This is the first campaign I've ever seen that has overkill posts requirement. It seems to be just fine but I feel like it's forcing their participants to spam all over the forum.
Luckily the campaign only accepts Sr. Member and above but who knows if some of those participants lose their post quality just to get paid. But there are surely lot of Newbies who will try to promote that campaign which will lead to spam.
Forum rules doesn't regulate signature campaigns. So, 20 or even 50 posts is OK as long as you're not breaking forum rules. Nobody can force you to make so many posts per day, I rarely make more than 5-6 posts per day. Offcourse, if you come here to earn for a living, then you're "forced" to reach 20 posts limit.
I don't understand your last sentence. Only Sr. Members and above are accepted, so how Newbies can try to promote campaign? Or you're talking about bought accounts?