Nearly every consumer—96%—now values ratings and reviews when making purchase decisions, significantly outranking recommendations from family and friends (72%) and TV commercials (11%), according to a 2025 survey by PowerReviews, a ratings and reviews technology company.

The same survey found 95% of consumers regularly read reviews, and 57% won't buy a product that has no online reviews at all.

The transformation has been three decades in the making. In October 1995, about three months after Amazon launched as an online bookstore, the concept of customer reviews was so novel that Amazon had to explain it in a press release: "Amazon.com allows readers to share their thoughts on particular books and exchange ideas with other readers around the world on its users' reviews page."

Today, reviews are an obsession for retailers and brands focused on two questions: how to generate more of them, and how to handle the negative ones.

The 4.75 sweet spot

Shoppers want good reviews—but not perfect ones. A five-star average rating strikes 46% of shoppers as suspicious, per PowerReviews. Among Gen Z shoppers, 53% don't trust five-star ratings.

The conversion data backs up that skepticism. A 2022 PowerReviews analysis found products with a perfect 5.0 rating converted at 3.1%, roughly the same as products rated 3.0–3.49. The optimal range was 4.75–4.99, which converted at 4.9%. Products rated 4.25–4.49 converted at 4.5%.

That commercial weight has made fake reviews a persistent problem. Yelp reported in its annual Trust & Safety report that it filtered out nearly 500,000 suspected AI-generated reviews in 2025. Yelp has also flagged business pages it says it "caught" compensating reviewers with cash or free products in exchange for positive reviews.

Amazon reported its legal actions in 2025 shut down more than 100 websites providing fake review "scams targeting" its store. The company says it blocked "hundreds of millions" of reviews it suspected of being fake.

Regulators have set boundaries. Under FTC rules, companies may offer incentives for reviews but cannot condition them on a positive rating, and incentives generally must be disclosed.

Responding to bad reviews works

Some brands respond to negative reviews directly rather than waiting for positive ones to bury them. Supercheap Auto, an Australia-based car-parts retailer, found that online shoppers who read one- or two-star reviews were 32% more likely to purchase the product if the retailer had posted a response, according to a case study from Bazaarvoice, a customer reviews and user-generated content platform.

Detailed reviews may also cut return costs. More than 8 in 10 shoppers (84%) said more detailed reviews could have helped them avoid a return, according to a 2025 survey by Yotpo, an e-commerce reviews and loyalty platform.

"Review context is especially critical in high-return categories where touch, texture, and fit are key," the Yotpo report stated. "Without the sensory cues of an in-store experience, shoppers lean on the real-world insights of others to make informed decisions."

Amazon founder Jeff Bezos framed the strategic case for negative reviews in a 2018 talk at Southern Methodist University, recalling a letter from one publisher suggesting Amazon publish only positive book reviews to boost sales.

"I don't actually believe that," Bezos told the audience. "I don't think we make money when we sell something. We make money when we help someone make a purchase decision…If you think about it that way, you want the negative reviews too."

For brands weighing whether to chase flawless ratings or cultivate honest, high-volume feedback, the evidence points one way: a 4.8 with visible responses to criticism converts better than a too-perfect 5.0.