Any website that has a ranking based on reviews or even votes has a fraud problem. This is Goodharts law in action. Glassdoor, Amazon, Yelp, Google, you name it

Any website that has a ranking based on reviews or even votes has a fraud problem. This is Goodharts law in action. Glassdoor, Amazon, Yelp, Google, you name it. This is the "game". Heck, I am sure there are even some people who game HN votes.