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 http://peaceoftheocean.com/shesellsseashells http://www.orcawebperformance.com/like-cheese-a-wordpress-plugin/
*currently this version allows for adding likes to posts *3.0 coming soon to allow for gallery image likes, shortcodes
This plugin is available for download to be used on your WordPress self-hosted installation.