Testimonial Tree offers the ability to send customers to third party sites' "Leave a Review" page to leave you a testimonial and a high-star rating. When a customer leaves a positive testimonial, the third party sites are displayed to encourage the customer to visit the other sites in an attempt to help grow your online reputation and business.
Curious which sites you can connect? They include:
(The instructions for Yelp and Facebook are similar to the instructions linked above, you'll just gather the relevant review collection link from those accounts.)