A lot of comments about existing tools to spot fake reviews, and wondering why Amazon doesn't use them because the fake reviews that are dominating Amazon are clearly hurting consumers.

The long play for Amazon might just be that consumers gravitate towards the products that are actually sold by Amazon, because they can be sure that it should at least work. Eventually Amazon doesn't just control the marketplace, but is the only major vendor as well, and actually controls everything from the factory to the consumer.