svil4ok

Adds a list of XHTML compliant graphic links at the end of your posts that allow your visitors to easily submit them to a number of social bookmarking sites.
Social sites:
<pre><code>* Svejo
* Favit
* Facebook
* Twitter
* Edno23
* Dao
* Delicious
* Google Buzz
* Google Bookmarks
* Digg
</code></pre>
<a href="http://dev.svil4ok.info/wordpress/add-to-social/" rel="nofollow ugc">Demo</a> | <a href="http://dev.svil4ok.info/wordpress/add-to-social/" rel="nofollow ugc">Plugin information</a>

Add To Social

andreyk

The WP Ya.Share plugin adds to your blog a set of buttons to save URLs of your pages/posts in popular social networks (twitter, facebook, livejournal, vkontakte etc.).
Добавляет блок ‘Поделиться’ (Ya.Share, разработанный в yandex) для сохранения ссылки просматриваемой страницы вашего блога в популярных ‘социальных сервисах’ (вконтакте, жж, твиттер и т. д.).
It uses the Yandex Ya.share API; I shaped it into wordpress plugin with some options only.
The following options are available:
<ul>
<li>locate “ya.share” block either in the content of a page/single post or in the sidebar (as a new widget);</li>
<li>select a list of preferable social networks;</li>
<li>button/link/icon for expanded social networks list, or nothing;</li>
<li>left, right or centered location;</li>
<li>above or under the content;</li>
<li>inscription language. 
Please feel free to contact me with your questions or suggestions.</li>
</ul>

WP Ya Share

Adds the Yandex 'Share in social networks' block into posts or widget to simplify saving URLs of your blog pages into social networks.

Add To Social vs WP Ya Share