As a Reviewer. I can Give Five Best Reviews. Whish is positively Boost your Business. Google doesn’t openly share details about how they calculate local search rankings. However, Google has claimed that they give attention to (1) Relevance (2) Prominence and (3) Distance. Reviews impact the first of these, alerting crawlers that a business is relevant to the searcher. According to their site, Google also carefully analyzes businesses’ review recency, frequency, quality, and quantity when ranking. Moz suggests that roughly 10% of Google’s entire search algorithm is driven by review signals such as review quantity, velocity, and diversity.