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.

vfvalent

The Social Bookmarking RELOADED plugin for WordPress adds a list of XHTML compliant graphic links at the end of your posts and/or pages that allow your visitors to easily submit them in a number of social bookmarking sites. 
Furthermore, the plugin adds a page in the WordPress admin section that lets you customize it.
Social Bookmarking RELOADED support the list below: 
The following sites are supported: Del.icio.us, digg, FURL, blinklist, Socializer, reddit, Feed Me Links!, Technorati, Newsvine, Ma.gnolia, Google Bookmarks, GOOGLE BUZZ, Squidoo, BlinkBits, Stumble Upon, Netvouz, Rojo, Blogmarks, Co.mments, Scuttle, Tailrank, Bloglines, Segnalo, OkNotizie, Netscape, Bookmark.it, Ask, linkagogo, del.irio.us, Socialdust, Live MSN, Slashdot, Sphinn, Diggita, FaceBook, Upnews, Wikio, Barrapunto, Notizieflash, Fai informazione, Blogmemes, Blogsphere news, Blogsvine, Scoopeo, Myspace, ZicZac, Twitter, IndianPad, Technotizie, Blue Dot, Connotea, Diggitsport, Tipd, FriendFeed, digo, buzz.
In plugin .zip file, there is a pdf file about installation, usage of Social Bookmarking Reloaded in english, italian and spanish. 
You can see the video how social bookmarking reloaded works on <a href="http://www.savevideos.net/" rel="nofollow ugc">Save Video</a>.
<h3>Others</h3>
Update Instructions (from version RELOADED 1.8) – Aggiornamento del plugin (a partire dalla versione 1.8) 
Upload all the contents of the social-bookmarking-reloaded directory to your wp-content/plugins/social-bookmarking-reloaded directory. 
Delete the folder social-bookmarks-reloaded. 
Than activate the plugin in plugin menu of control panel. 
If your blog is based on WordPress 2.5 and newer, you can use automatic update in plugin panel.
If you would like to submit an useful social, that is not included in this plugin, important please send me an 18×18 icon and a link for submition e.g. www.soc ial.xz/submit?url={link}&title={title}. To do this, you can add a comment in a social bookmarking reloaded post. Thank you very much.
Send me the material I have mentioned before, otherwise I will ignore your request of inclusion. (I will not register every social request I receive.)
For social bookmarking RELOADED: valent 
http://www.valent-blog.eu
Based on GNU GPL plugin: 
Social Bookmarks 3.2

Social Bookmarking RELOADED

The Social Bookmarking RELOADED plugin for WordPress adds a list of XHTML compliant graphic links at the end of your posts and/or pages that allow you …

WP Ya Share vs Social Bookmarking RELOADED