kk Star Ratings allows blog visitors to involve and interact more effectively with your website by rating posts.
Add Google Rich Snippets for reviews and rating based on schema.org for a better WordPress SEO, more search traffic and conversion.
Version: 3.1 Formats recipes so they are SEO-friendly. Now fully supports WordPress 4.0.1.
Turn on Your Blog's Social SEO with WP Social SEO Booster and get a Huge Boost in Google Rankings!
This plugin allow author to add Schema.org markup options for product reviews.