Online reviews are the equivalent of a personal referral for business. People trust them.
Trust is the #1 factor in winning new business.
LOCAL SEO BOON
In addition, having google reviews (as well as other reviews) will impact your local seo efforts. Your placement in the local search results as well as a pin on the map provide additional attention.
This impact is multiplied many times over when they can also see current, positive reviews for your business.
Your rank on the google map widget that displays along with organic search results from google will also rise with the number of positive reviews you receive.