Star rating system is probably the easiest way users give their feedback. After sorting through numerous plugins, we decided to use WP-Post Ratings plugin by Lester “GaMerZ” Chan. The main reason why we chose this plugin over others is because it is fairly easy to use. WP-Post Ratings plugin works for WordPress posts as well as custom post types. You have the option of adding bar rating system, heart (favorite), number rating system, upvote / downvote, as well as star rating system. Below is a screenshot of all the options you can choose from:
It also has the option to show the Most Rated Posts in a sidebar or anywhere else in your WordPress theme. See our step by step guide on adding a post rating system in WordPress.