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Institute for Operations Research and the Management Sciences There's a large online marketplace for the selling and buying of fake online reviews. Fake online reviews do contribute to better ratings and sales for product sellers. Online marketplaces work to regulate online fake reviews, but there is lag time in enforcement. Here's how it works: Sellers post in private online groups to promote their products. They then pay customers to purchase certain products and leave positive reviews. These social media groups exist for a number of online retailers. "For our research, we decided to focus on Amazon because it is the largest and most developed market," says Hollenbeck. "We collected data from this market by sending research assistants into these social media groups to document which product marketers were buying fake reviews and when. We then tracked these products' outcomes on Amazon.com. This included reviews, ratings, prices and sales rank." "For the products in our research observed buying fake reviews, roughly half of their reviews were eventually deleted, but the deletions occurred with an average lag of over 100 days, allowing sellers to benefit from the short-term boost in ratings, reviews and sales," says Proserpio. "Almost none of the sellers purchasing fake reviews were well-known brands. This is consistent with other research that has shown online reviews are more effective and more critical to smaller, lesser-known brands." Link to Study camera bag cyber mondayfake replica bags
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