When online reviews first started in the late 1990s, shoppers used them to compare their purchases with each other instead of relying on the seller’s description or an expert recommendation. Directory sites like Yelp and Trustpilot grew their user bases by incentivizing contributors to leave authentic reviews for restaurants, doctors, and just about any public-facing business. But online reviews created a new problem: fake reviews. Businesses hired brokers to recruit people to write false reviews — either positive ones to Continue reading →