sageshilling

Like Cheese provides a number and an image of a heart beneath site images; 
hover on the number to see the display names of past visitors that liked the image. 
Visitors can register like/unlike your site images; heart image changes accordingly. 
Uses Nextend-Facebook-Connect to allow for easy Facebook login and gain approved valuable site visitor information. 
Provides additonal image fields in the media uploader.
demo <a href="http://peaceoftheocean.com/shesellsseashells" rel="nofollow ugc">http://peaceoftheocean.com/shesellsseashells</a> 
<a href="http://www.orcawebperformance.com/like-cheese-a-wordpress-plugin/" rel="nofollow ugc">http://www.orcawebperformance.com/like-cheese-a-wordpress-plugin/</a>
*currently this version allows for adding likes to posts 
*3.0 coming soon to allow for gallery image likes, shortcodes

Like Cheese

Like Cheese lets your site visitors 'like' your site images.

Matt

Easy to use voting contest plugin for WordPress. Simply let users vote photos/images in your Contests.
Installing and activating this plugin will place a vote button and a vote count below each photo of all contestants images using the [showcontestants id=’category id’] shortcode.
Note: Only logged in users can vote in Lite version!
<h4>PRO VERSION</h4>
The all-in-one <a href="https://wpvotingcontest.com/downloads/wordpress-voting-photo-contest-plugin/" rel="nofollow ugc">WordPress Contest plugin</a>. Start an Audio Contest, Video Contest, Photo Contest, or Essay Contest using a single plugin.
<h4>Online Demo</h4>
You can try out the <a href="https://demo.wpvotingcontest.com/" rel="nofollow ugc">Online demonstration</a> to see how the plugin works.
To login, go to the <a href="https://demo.wpvotingcontest.com/wp-admin/admin.php?page=contestants" rel="nofollow ugc">Demo dashboard</a> and login with demo / demo4.

WP Voting Contest Lite

Let users cast votes on your images/photos.

Like Cheese vs WP Voting Contest Lite