Product Review

Product reviews are broadly divided into "verified purchase reviews" and "non-purchase reviews." On Amazon, reviews with the "Verified Purchase" badge are from actual buyers and serve as an indicator of credibility. However, fake reviews (planted reviews) and stealth marketing also exist, and Japan's Consumer Affairs Agency enforced stealth marketing regulations in 2023 to strengthen countermeasures.

There are three key points for identifying credible reviews. First, check whether specific usage experiences are described - reviews with only vague praise tend to be unreliable. Second, see whether both pros and cons are mentioned - reviews with nothing but perfect ratings are suspicious. Third, examine the distribution of review posting dates - a concentration of high ratings within a short period may indicate fake reviews. Using tools like Sakura Checker to verify review credibility beforehand is also an effective approach.

To use product reviews effectively, you should look beyond the average star rating and focus on the distribution pattern of ratings. Products polarized between 5-star and 1-star ratings likely excel for specific use cases but fall short for others. Products clustered around 3-4 stars can be expected to deliver stable quality without major flaws. The smart approach is to read low-rating reviews carefully and determine whether the same issues would occur under your own usage conditions.

From a seller's perspective, reviews are both product improvement feedback and an asset that directly impacts SEO and sales. Amazon's algorithm tends to rank products with more reviews and higher ratings higher in search results. Common practices include requesting reviews through post-purchase follow-up emails and including review request cards with shipments, but offering monetary compensation for reviews violates platform terms of service and risks account suspension.