elCreator

<p>With this plugin you can easy place some Social Like buttons to sidebar.<br />
Current release supports vk.com (vkontakte.ru) Like, Facebook Like, Twitter Like and Google Plus (+1)</p>
<h3>Credits</h3>
<p>This plug-in is not guaranteed. You can use this plug-in for free regardless of the purpose.</p>
<h3>Contact</h3>
<p>admin@itcreati.com</p>
<p>http://itcreati.com</p>


SocWidgIt!

With this plugin you can easy place some Social Like buttons to sidebar.

Martin Lormes

<p>Automagically adds Open Graph tags to your blog. Control how your posts and pages are presented on Facebook and other social media sites. No configuration needed.</p>
<p>When someone likes or shares your blog on Facebook, your header image is shown. If someone likes or shares a post, the featured image (post thumbnail) is shown. If you haven’t selected a featured image, then the plugin looks for the first image inside the post. If there aren’t any images in your post, then your blog’s header image is shown.</p>
<p>For more information on the Open Graph protocol go to http://ogp.me/</p>


Open Graph Pro

Adds Open Graph tags to your blog. Control how your posts and pages are presented on Facebook and other social media sites. No configuration needed.

SocWidgIt! vs Open Graph Pro