Merchants are the parties providing the products or services
Does this mean like for movies, free movie premiere tickets? or free hotel stay? or free gourmet experience? Who wouldn't want to be a helper?
Merchants are simply called in layman's term as Sellers. They sell products or services.
Do I need to clarify if you are referring to freebies? Being a helper is not about freebies or anything. The Helper does the quality review for a product or services, vote for a review and do a monthly report about quality reviews.
This is what a helper receives::
The Helper will be entitled to receive a substantial portion of the advertising revenue or registration fee (up to 50%) depending on their fields.