emostarxd

bogdan_nazar

This plugin adds some social functionality to WordPress. Such as FB comments, VK comments, share buttons etc. 
The main capabilities of this plugin is listed below:
<ul>
<li>Internal share buttons (G+,FB,VK,Twitter,Delicious,Pinterest,LinkedIn and more) with ability to select preffered ones.</li>
<li>The tools for ordering internal social buttons.</li>
<li>The tools for “ShareThis” buttons embedding. Instructions are present to get customized ShareThis data.</li>
<li>Facebook and Vkontakte comment widgets.</li>
<li>Option to order them.</li>
<li>Option to switch on/off each of widgets including WP internal comments.</li>
<li>Default language is set to English.</li>
<li>Already translated for russian users.</li>
<li>And more other options to cusomize data and view of comment widgets.</li>
</ul>
This list of available features will grow in the future releases.
<h3>License</h3>
Plugin is free for any use. Don’t delete the authorship note if you’ll going to modify source code under the your needs.

Social Monster

This plugin adds some social functionality to Wordpress. Such as FB comments, VK comments, share buttons etc.

igrp

VK Lock make is possible to restrict page\post access to authorized VKontakte group members only. 
Plugin will take care about site visitor authorization in VKontakte and checking if he\she is member of VKontakte group specified by you. 
Access to the protected page\post content will be allowed only if user is authorized and is a group member.
Restriction works for password protected pages\posts only – this means that your have to set page\post type to “password protected” and specify any password (plugin does not use this password, if you like you can access protected page with that password via conditional password access form, provided by WordPress).
Plugin works via VKontakte API (https://oauth.vk.com/authorize) therefore you need to make some proper (its very easy) settings at VK.COM side. See Installation instructions.
This plugin may not work properly with PHP versions earlier than PHP 5.2

VK Lock

Restrict page\post access to authorized VKontakte group members only.

Social Monster vs VK Lock