> I’m not sure why Amazon didn’t just block non-verified-purchaser reviews, increasing spammer costs significantly. I'm not sure this would help much. I've be

> I’m not sure why Amazon didn’t just block non-verified-purchaser reviews, increasing spammer costs significantly. I'm not sure this would help much. I've been asked by vendors to leave a review and if it's 5 stars, I will get something in return. I think for some people this would be a "well, nobody is getting hurt, right?" decision and they'd just do it.