scibuff

If you would like to increase the exposure of your blog WordPress Connect 
it the perfect plugin for you. It comes with a unique set of tools through 
which you can reach the largest social networking community on the planet 
that would engage and then share and discuss your content. It will enable 
you to build up a fan base and to connect with a wider and a more relevant 
audience. Now your blog readers with a Facebook account can post comments, 
create discussions and like your posts and pages.
The plugin integrates Facebook Social plugins with WordPress. It provides 
tools to add the Facebook Like Button and Facebook Comments automatically 
to every post and page. Of course, the user has a full control over settings 
such as width, font, color scheme, etc.
WordPress Connect also provides fully customizable WordPress Widgets for the 
following Facebook Social Plugins
<ul>
<li>Activity Widget</li>
<li>Comments Widget</li>
<li>Facepile Widget</li>
<li>Like Box Widget</li>
<li>Like Button Widget</li>
<li>Live Stream Widget</li>
<li>Login Widget</li>
<li>Recommendation Widget</li>
<li>Send Button Widget</li>
</ul>
The widgets can be added to your blog just as easy as any other WordPress 
Widget, i.e. through the widgets page (under Appearance on your Dashboard).
Since 2.0, all WordPress Connect widgets are rendered in the XFBML mode (i.e 
no iframes) to provide full functionality the iframe versions may lack.
A big addition since 2.0 is a simple yet powerful <a href="http://wp-connect.tomasvorobjov.com/api/" title="WordPress Connect API" rel="nofollow ugc">API</a> 
for plugin and theme developers who can now specify default settings for WordPress 
Connect to reflect the needs of their plugin/theme. The API provides an easy 
way to include any widget (such as the Like Button of Comments) anywhere in 
the theme, e.g. to add the Like Button to the header or Comments to the 
footer.
Requirements
<ul>
<li>PHP 5.2.0 or newer</li>
<li>WordPress 3.0 or newer</li>
</ul>

WordPress Connect

This plugin integrates the Facebook Social Plugins with Wordpress.

Nick Halsey

This plugin, like many others, adds content-sharing functions after your posts (and optionally pages and media attachments). But the similarities end there.
QuickShare is quick because it doesn’t run 3rd-party sharing JavaScript; in fact, there is no front-end JS. The sharing functions are built into links that take the user (in new tabs) to the native sharing interface on each social media site.
You can choose which social media sites to include from: Facebook, Twitter, Pinterest, Linkedin, Google+, Tumblr, Reddit, and StumbleUpon. A basic email function is also available.
The share bar appearance is highly customizable and share functions can be displayed as either icons, Genericons or text. Each display method features different customization options; customize through the settings page or with custom CSS.
QuickShare can be displayed at the end of ever post, page, and/or attachment, or all post types automatically. Or, you can use the <code>[quickshare]</code> shortcode to display QuickShare wherever you’d like in any of your posts/pages. You can also exclude posts by id, or even use a custom output function in your templates, including the ability to override the default generated sharing data.
As a bonus, QuickShare includes several built-in CSS3 effects for hover state animations.
Please visit the plugin support forum for help with custom css snippets and/or feature requests!
Please note that QuickShare does not and will not support link tracking, because of its goal of being simple and lightweight. You can use a 3rd-party tool like Google Analytics to track shares as external links.

QuickShare

This plugin, like many others, adds content-sharing functions after your posts (and optionally pages and media attachments).

WordPress Connect vs QuickShare