Yelp has started publicly naming and shaming businesses that pay for reviews. The review site’s new index documents businesses offering everything from a crisp $100 bill for leaving the best review to a $400 Home Depot gift card for a five-star review. It also lists every business whose reviews have ever been suspected of suspicious activity, like spamming the site with multiple reviews from a single IP address.
how could we build a federated open replacement for B2C reviews and ratings without getting it corrupted?
With code and algorithms
One step that could help would be to require proof that you actually went to $location