One of the best ways to let your users say their opinion except from the comments is by rating systems. There are a lot of useful WordPress poll and rating plugins where you can download and use freely. here are the best plugins we found:
Thank You Counter Button (Download)
This is the visitor’s ‘Thank you’ or ‘I like it’ clicks counter button. Every time a new visitor clicks the “Thank you” button, one point is added to the total “thanks” counter for this post which can be seen at the same button.
Adds an AJAX poll system to your WordPress blog. You can easily include a poll into your WordPress’s blog post/page. WP-Polls is extremely customizable via templates and css styles and there are tons of options for you to choose to ensure that WP-Polls runs the way you wanted. It now supports multiple selection of answers.
The PollDaddy Polls and Ratings plugin allows you to create and manage polls and ratings from within your WordPress dashboard. You can create polls, choose from 20 different styles for your polls, and view all results for your polls as they come in.
Adds an AJAX rating system for your WordPress blog’s post/page.
GD Star Rating (Download)
GD Star Rating plugin allows you to set up rating and review system for posts, pages and comments in your blog. You can set many options for displaying the rating stars, and also add widgets into the sidebars for displaying top ratings and other statistics generated by the plugin.
I Like This (Download)
This little plugin lets your visitors to simply like your posts instead of commenting.