Because Amazon reviews are so influential, it’s tempting to stack the deck a little. Maybe give yourself a glowing review, or enlist a group of friends to review it for you. Those schemes, even when well-intentioned, can violate Amazon’s policies, so here's a quick refresher about what you can and can’t do.
For starters, people connected to either the product or the seller can not post reviews. This includes not only the seller, investors, and manufacturers, but also people who have a “close, personal relationship” with the seller. So you can’t just tell all your friends and family to leave good reviews, because they’ll probably be taken down.
Nor can sellers pay for reviews. You may be willing to pay good money for a positive review — after all, it seems like an appropriate way to spend your advertising budget — but Amazon does not allow it.
Similarly, you can not trade for or exchange good reviews. For example, you and another seller cannot agree to give each other positive reviews. Amazon’s review policies are in place to keep the system as objective as possible. Many of the policies also protect third-party sellers. For example, multiple negative reviews from the same reviewer are prohibited, as are reviews from rival sellers.