Neither. Let's say that the possibilities to explore LB are very limited with the initial set of rights. To have better ratings I could drop a shitload of articles, the kind of articles that anyone likes per human psyche. For example cats :) or puppies. Great for me but bad for LB, that would become a lame image board.
I think it would be beneficial if:
To have a 'topic and response' rating and a vendor rating.
To require a certain treshold, prior to having the option of becoming a vendor to weed out scammers and such.
Rating topics and responses is a difficult exercise as many downrate content they object (but is however useful content).