After a service has been provisioned and both the seller and the buyer confirmed that everything was ok, the buyer can leave a review for the seller. The option shows up at the bottom of the order page.
The reviews are then shown on the top of the location page.
There is also the option of importing reviews from Google to your A4ord-profile. If you want to do that, please reach out to Customer Service, using the e-mail-address support@a4ord.com.