[Giho]

Why don't they make a review system where the products with fewest bad reviews gets rated the best.

If the reviews have to go through Amazon's system it should be hard enough to fake. The "true" customers will make bad reviews if they didn't like the product. The "fake" reviewer can't rate their own products to make them get a better review, an they have to buy the competitors product x times to give x bad reviews.

[Giho]

And to further secure it, the amount of buys can be compared to amount of negative reviews. Because who will in their right mind buy a product with a lot of negative reviews, to later give a negative review?