Dave Konopka

UpDownUpDown provides two template tags for adding up/down voting for any post or comment. Anonymous guest visitors can either be allowed to vote (tracked by ip address) or be denied voting and shown a view-only vote count badge. Votes are registered on the server without refreshing the page.
Fork the Github repo: <a href="https://github.com/davekonopka/updownupdown" rel="nofollow ugc">https://github.com/davekonopka/updownupdown</a>
This plugin was initially developed as a project of Wharton Research Data Services.

UpDownUpDown

Simple WordPress plugin for up/down voting on posts and comments.

janvierdesigns

phprule

IMPORTANT UPGRADE INFO 1.0.4 to 1.0.5 
Before upgrading from 1.0.4 to 1.0.5 please make sure to deactivate the plugin first. Installations from 1.0.4 may not have the required tables
This plugin allows your visitors to rate a product or a service based on a series of criteria. It can be used as a simple rating system, or a complex matrix review one of up to 10 different criteria. It can be used for websites such as hotels, hosting review websites, business review websites, services review websites, polling and other kinds of rating systems and much more. It is very lightweight and works with wordpress native functions and hooks. 
It is fully responsive both the client and admin ends.It is fully localizable and we include the .pot file to make easy. 
You can join/follow the discussion about the plugin on its home page at http://www.freelanceresources.net/forums/forum/plugins-and-softwares/review-matrix/ 
If you have any bug issues, please report them at http://www.freelanceresources.net/forums/forum/plugins-and-softwares/review-matrix/ because that’s where we intend to keep track of all the information related to the plugin
<h3>UPCOMING FEATURES</h3>
<ul>
<li>Shortcode Support</li>
<li>Cookie based voting/rating (Debatable though)</li>
<li>Full site activity</li>
<li>MultiSite support</li>
</ul>

Multi Rating & Review Matrix System

There a few bugs in the back, but I like the idea



UpDownUpDown vs Multi Rating & Review Matrix System