Somehow, this reminds me of the horrors of secondstrade when it was still around. Similar structure, loose rules, etc.
I was not around those times (gladly enough), but we should try to prevent bad things from happening that have happened in the past.
If people accept these horrible rates, then so be it. But the problem is that only spammers will apply to this campaign because a) they have no competent campaign manager, b) the rates are low so they don't have any competition and c) they are able to get paid to do the bounty stuff that they are already doing.
The rates are the lowest which i have seen, basically could be considered as (slave work). Also they failed and paid out users two payments for one week, so i doubt that such exchange can even be trusted, because they cannot even handle a simple bitcoin transaction. Now imagine if that happened with customer funds. "OOPS! We just paid everyone's withdrawal 2x times", they would definetly not make up to that as they don't even have money for decent budget.
As long as Nexybit pays, I don't think that you can accuse them of being "scammers". But it certainly makes the unprofessional considering they are essentially explicitly employing spammers as their promotional medium which will not end well for themselves.
Well accusing is a different thing, but to me atleast this whole thing smells miles away. They also took the rule of 100 characters per post away, so you could basically wear the signature, and write a bot which spams the whole forum with nonsense bullshit.