I think some people may have misread the Yobit notification.  

Yobit will only pay the person posting for up to 20 posts per day.  The posts have to be made by a forum member of Sr Member level or above.

Yobit do not want to be associated with rubbish spam posts.  They want good contributors who are trusted on this forum to display Yobit in their signature, while they are discussing useful and relevant topics in a positive way.

I am not at a high enough level here to benefit from the Yobit signature campaign.