Kotaro Hosoda

This WordPress plugin makes a link tile from Open Graph protocol. 
What you have to write is just a shortcode:
[khlt_linktile url=”URL”]
And there are some options.
<ul>
<li>url : (mandatory) URL to link</li>
<li>bgcolor : (option, default: #fff) background-color of the link tile.</li>
<li>nocache : (option, default: false) set to true once if the linked page is changed.</li>
<li>desc : (option, default: fetch from OGP) set any text here if you want to override OGP’s description.</li>
</ul>
OGP data from linked site is cached for a week. (You can change my PHP code)

Open Graph link tile

This WordPress plugin makes a link tile from Open Graph protocol.

David Miller

This is a plugin to add <a href="http://opengraphprotocol.org/" rel="nofollow ugc">Open Graph Protocol</a> data to the metadata of your WordPress blog for better communication with Facebook and other services which use this type of data.
If you have any queries regarding this plugin, please visit <a href="http://www.millerswebsite.co.uk/2011/01/23/wordpress-plugin-wp-ogp" rel="nofollow ugc">http://www.millerswebsite.co.uk</a>

WP-OGP

This is a plugin to add Open Graph Protocol Data to the metadata of your WordPress blog.

Open Graph link tile vs WP-OGP