jReviews is a review and rating system (or PHP review script) for the Joomla and Mambo Content Management Systems.
With jReviews you can easily build a sophisticated review site or add a review section to your site.
jReviews
Feature Highlights

* Review everything: movies, music, cars, restaurants, hotels, websites, software, mobile phones, service providers, recipes, travel, books, consumer electronics, articles, you name it
* Custom fields in content & reviews: create custom forms for the main entry and also for user review.
* Advanced search: allow users to search using the custom fields. Design custom search forms with the advanced search module.
* Editor and user reviews: enable only editorial reviews, user reviews, both or none. If you disable reviews you can still take advantage of custom fields and advanced search.
* Customizable templates: clear separation of code and template files allow for easier customization of jReviews.
* Web 2.0: use of ajax and other effects to improve the user experience.
* Reviews RSS Feeds: propagate your review content throughout the web.
* SEO Ready: friendly urls through the use of SEF extensions and a SEO Manager to adjust title, meta keywords and descriptions for custom fields.