Add Google +1 button to your WordPress blog to let visitors recommend your pages right in Google search results without having to leave the page.
"WP PostVoting" plugin allows visitors to vote on your blog's content with a widget of the most voted posts.
Oxford Debate is a plugin that allows to incorporate Oxford-Style debates on your website.
nomination and voting
Divide posts into sections and implement voting for each of them. Great for list-type posts.
Vote on Post and Display Who Voted via gravatar thumbnail.
Easily add research-based, engaging buttons (such as "Respect" or "Important") to your site.
CBX Poll - Poll plugin for wordpress
Full-featured & real-time emotion/mood rating plugin which allows visitor to rate individual post though smilie icons.
Add fancy voting widget to any type of post and page with elegant themes
Vote It! Buttons for Blogpostings. Set very simple a digg, sphinn or another social-news-button in your blogpost.
Multi Rating & Review Matrix System plugin allows your blog/site visitors to rate a post, page based on up to ten multiple criteria
Allows users to vote on a topic using Twitter. Display results in standard banner sizes on posts, pages or widget. Optional Adsense Revenue Share.
A free, full-featured rating plugin that also live-mirrors your posts at Thumbar.com to boost your traffic.
A sort of "Reddit clone" that allows users to post links, up- or down-vote them, and comment on them.
A plugin for specific niche questions your vistors can vote for.
Add fancy star rating to any type of post and page with elegant themes
The Google Buzz button easily allows your blog to be shared.
Allow user add post like button above or below post content.
Enables your blog readers to suggest new post tags or upvote/downvote existing ones.
The yahoo Buzz button easily allows your blog to be shared.
A plugin that allows WordPress users to add voting functionality to their website.
A WordPress plugin to allow simple upvoting of post objects by a user.
This plugin adds voting functionality for posts. visitors can vote for the post and against.
A voting tool for the members or employees of a group, club, community or organisation (eg. HR) to provide internal feedback anonymously.
Emojized allows visitors to a WordPress site to rate and react to content using Emojis. Because text without them is 🅱🅾®ℹ️🆖
Adds a button which easily lets you +1 your blog posts.
Online voting system for minuted meetings.
Easily create and manage polls for your site. Then display results in a post or page.
Review or rating any post type, with stars or other awesome icons, adding some effects on hover (and tooltips).