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 …

sole

This plug-in works while you sleep and tries to find out who’s linked your blog posts and/or pages in delicious.com (formerly known as del.icio.us).
<h3>Usage</h3>
When installed, the plug-in runs automatically in the background when somebody visits your blog – you don’t need to add any tag or edit any template to make it work, just make sure you have visitors 😉
You can view the results of these queries by clicking the new Delicatessen option under the Dashboard header on the top left area of the admin area (i.e. exactly the same place where Akismet places its results link).
<h3>Uninstall</h3>
Just deactivate the plug-in, and remove its folder from the wp-content/plugins directory. Or click Delete for the same result.

Delicatessen

Find out who's linking you in delicious.com

Social Bookmarking RELOADED vs Delicatessen