dyerrington

WP Social Feedback is a plugin that allows your users to submit feedback, view what other users have submitted and vote on 
other feedback submissions. There are many externally hosted solutions that do this for free, but don’t offer much 
in the way of features, branding or customization. So we decided to write a plugin that might solve this problem but 
we also wanted something that we might actually use. Essentially, we also need an easy to use feedback system that 
will help us decide which features are most interesting to our users.
Features
<ul>
<li>Registered users can submit feedback</li>
<li>Registered user comments per feedback entry</li>
<li>Users can vote on the feedback they like the most</li>
<li>Feedback can be displayed and sorted by date, popularity and votes</li>
<li>Integration by Shortcode</li>
<li>jQuery UI Theme support</li>
<li>Customization via templates</li>
</ul>
Support and feedback: http://www.vervetype.com

WP Social Feedback

WP Social Feedback is a plugin that allows your users to submit feedback, view what other users have submitted and vote on other feedback submissions …

aakash1911

WP Likes lets visitors “like” your posts on the fly. No logging in! 
Easily customizable to be used in various other scenarios. 
Shows top liked posts in sidebar widget or on a separate page.

WP likes

WP Likes lets your blog visitors 'like' your posts on the go.

WP Social Feedback vs WP likes