Yobit pays what, 12k satoshi per post up to 20 posts per day? You better believe everybody and their mother is going to be applying for that campaign. If my advanced mathematics is correct (lol), that's $1.01 per post. Somebody please tell me what $20.20 buys in a 3rd world country. I mean that, I'm very interested to know.
And I don't frequent the spam-filled sections of the forum, like Bitcoin/Altcoin Discussion and other sections Yobit pays for, but I would imagine that most of the posts being cranked out by cryptotalk.org participants are pure spam. Yahoo62278 is doing an excellent job of trying to maintain control of the campaign, but there are still shitposters who are going to slip through the cracks.
And yeah, the participants probably don't have a lot of other options as far as making money on the forum. They could take their chances with some shitty-ass bounty that might not pay them with some tokens that are worthless anyway, but the Yobit campaign is a sure thing--if they don't get banned first. It doesn't seem to be as bad as when Yobit launched their last campaign. I attribute that to Yahoo62278's management.
Well $20 buys 20 cheeseburgers in a first world country led by an orange balloon so I reckon with your advanced mathematics you could extrapolate from that