On Jun 4th, 2013 Hesham Zebida, founder of Famousbloggers.net released WP Reviews,a new review plugin for WordPress. This premium plugin was designed for both authors and site visitor to rate products and services reviewed by a WordPress site. The plugin can be used review sits that want their visitors to add content and vote on the items reviews or it can be used for regular content sites that review products and services occasionally.
Site owners have the option to turn off the rating system for visitors and just leave it up to the authors to rate the product and services in their reviews.
For a complete review check out the review that I did on Evolutionary Designs.net