Not black market ads. For example someone pays a group of people to review a pro...

		anindha on Oct 29, 2017 \| parent \| context \| favorite \| on: Amazon now has a billion-dollar ad business Not black market ads. For example someone pays a group of people to review a product they are selling. Basically Amazon is competing with ‘black market’ techniques. A seller can now just pay Amazon to have their product at the top.