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 …

multippt

Stoob

This plugin adds voting functionality for posts. This function is similar to Reddit or Digg, in that visitors can vote for and against.
Guests can also vote for posts. This functionality can be disabled as well.
A widget can be displayed showing the most voted posts on your blog, giving further exposure to your popular posts.
A brief summary of what the plugin has to offer:
<ul>
<li>Visitors can vote for your posts, if they are allowed to</li>
<li>Easy management of post votes</li>
<li>Two-way voting: People can vote for or against your posts if feature is enabled</li>
<li>Post authors can be barred from voting their own posts</li>
<li>Initial vote count feature enables the voting of posts the moment they were published</li>
<li>Fairly customizable features</li>
<li>Top voted post widget gives greater exposure of posts your readers like</li>
</ul>
<h3>Requirements</h3>
<ol>
<li>
A working WordPress install
</li>
<li>
WordPress theme must contain a call to the <code>get_header()</code> function
</li>
<li>
WordPress theme must contain the WordPress loop
</li>
</ol>
Most WordPress installs have these, so you need not worry about these.
In addition, one must have JavaScript enabled in their browsers in order to vote.
WordPress 2.8 or above is recommended for this plugin.
<h3>Customizing</h3>
Votingfunctions.php
Within <code>votingfunctions.php</code>, there are several functions that can shows other information.
<pre><code>GetVotes($post_ID): Returns the number of votes associated with the post.

UserVoted($post_ID, $user_ID): Returns TRUE if the user already voted for the post, FALSE if the user hasn't voted for the post

GetPostVotes($post_ID): Returns an array of user IDs that have voted for the post.

GetPostSinks($post_ID): Returns an array of user IDs that have voted against the post.

SortVotes(): Returns an array of post IDs and votes. The array is sorted with the post having the most votes at the top of the array.
</code></pre>

Vote It Up

The Vote It Up plugin enables visitors to vote for and against posts.

WP Social Feedback vs Vote It Up