While there may have been a time when the number of reviews you had automatically pushed you to the top of the rankings list, it's no longer the only (or necessarily the main) thing impacting your score. Google and other search engines are now tracking how recent your reviews are too. So, even if you have 100 phenomenal 5-Star client reviews from a year ago, a newer competitor with only 20 reviews spread out across the past year could wind up outranking you in search.

Check out this article to view a case study on recency of reviews and how exactly it can impact your business in search results (and subsequent traffic/visits to your website).