I saw ads on coinmarketcap also, are you participants getting paid on time without delay?? I know Yobit has a sort of sketchy history on this forum since they caused a bunch of spam and got banned for 2 months the last time. I still use yobit myself and never had any problems with their exchange.
Joined this signature campaign before the 2 month ban. And yes, I'm glad to say that they are paying their participants without any delay during that time. But the worst thing in here is getting ban in this forum for 2 weeks for promoting a scammy exchange. Better to stay away this time.