Having traveled for a few weeks in Vietnam, the group I've been traveling with have noticed that quite a few restaurants that have 5 stars are using a sneaky tactic to game reviews on Google.
At the end of service, they ask specifically if you enjoyed the quality of the food, as well as the service, then if and only if you confirm both enthusiastically, do they hand you a QR code that takes you straight to the URL to leave a review.
This seems quite dishonest, as it's pre-selecting only positive reviews. My group of travelers have noticed anecdotally that really lackluster restaurants that use this tactic have 5 stars and a huge number of reviews, and it's completely destroyed our trust in the review system.
Has anyone else experienced this elsewhere?
None of the reviews platforms have any incentives to address cheating, either because their business model doesn't depend on their reviews functionality (Google Reviews doesn't make Google any money and is unrelated to Google's ad business, so no reason to care about cheaters) or because it's more profitable to take the side of the cheaters and operate a pay-to-play system (where paying customers can moderate/remove/downrank negative reviews) than to operate an honest platform.