Vladimir Prelovac

WP Digg This is a plugin that adds a Digg button, but with a twist. Instead of adding a Digg button to all your posts, WP Digg This plugin selectively adds the button only to posts you want.
To add a digg button just add a ‘digg’ custom field with value ‘1’.
WP Digg This can display digg button on your single pages but there is an option to show them on home and archive pages as well.
Plugin by <a href="http://www.prelovac.com/vladimir" rel="nofollow ugc">Vladimir Prelovac</a>.
<h3>License</h3>
This file is part of WP Digg This.
Category Search is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Category Search is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Category Search. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

WP Digg This

Provides an easy way to selectively add Digg button to your posts. Use 'digg' = '1' custom field in the post to promote it.

arstropica

Developed at <a href='http://nci.com' rel="nofollow ugc">NCI</a>. 
The Social Media Icons Widget is a basic sidebar widget that displays icon links for the user’s social media profile URLs. 
The widget includes 28 different freeware icon sets with different combinations of icons.  The default icon set features all the icon types found in the other icon sets.
Icons may be ordered using drag/drop in the widget panel
It is also possible to create custom icon sets by adding a folder with the icons you want to appear in your sidebar.
<h4>Included Icons</h4>
Note: Not every icon set designer creates the full range of icons.
<ul>
<li>Facebook</li>
<li>Google+</li>
<li>Twitter</li>
<li>LinkedIn</li>
<li>Flickr</li>
<li>YouTube</li>
<li>Digg</li>
<li>Reddit</li>
<li>StumbleUpon</li>
<li>Buzz</li>
<li>Vimeo</li>
<li>WordPress</li>
<li>Yelp</li>
<li>RSS</li>
<li>Contact</li>
<li>Delicious</li>
<li>Website</li>
<li>GitHub</li>
<li>Goodreads</li>
</ul>
All included icons are 32px x 32px. 
Custom icons of any size may be used.
<h4>Included Icon Sets</h4>
<ul>
<li>3D Statuette</li>
<li>3D Vector</li>
<li>Breakthrough</li>
<li>Circular</li>
<li>Creatures</li>
<li>Default</li>
<li>Furry Cushion</li>
<li>Grass Textured</li>
<li>Ice Cubes</li>
<li>Latte Art</li>
<li>Moleskin</li>
<li>Old Paper</li>
<li>Painting</li>
<li>Paper</li>
<li>PC Monitor</li>
<li>Picasso</li>
<li>Puzzle Piece</li>
<li>Scientific</li>
<li>Simple Vector</li>
<li>Sleek Blue</li>
<li>Sleek Green</li>
<li>Sleek Orange</li>
<li>Sleek Purple</li>
<li>Sleek Red</li>
<li>Sleek Yellow</li>
<li>Social Snow</li>
<li>Vintage Postage Stamps</li>
<li>
Yammy
</li>
<li>
Create your own icon sets by adding a folder to the “images/iconset” directory.
</li>
<li>Choose whether links open in a new window.</li>
</ul>
<h3>Arbitrary section</h3>
The icons in this plugin are distributed freely by a 3rd party and either licensed to be used in a personal or commercial capacity under several licenses including the Creative Commons, FastIcon and various other licenses.

WP Digg This vs Social Media Icons Widget