The internet is filled with fake reviews. Here are some ways to spot them

The emergence of generative artificial intelligence tools that allow people to efficiently produce novel and detailed online reviews with almost no work has put merchants, service providers and consumers in uncharted territory, watchdog groups and researchers say.

Phony reviews have long plagued many popular consumer websites, such as Amazon and Yelp. They are typically traded on private social media groups between fake review brokers and businesses willing to pay. Sometimes, such reviews are initiated by businesses that offer customers incentives such as gift cards for positive feedback.