Speedboxer

<p>This plugin will convert valid <a href="http://twitter.com/" title="Twitter" rel="nofollow ugc">Twitter</a> usernames mentioned in comments into a link to their Twitter profile page. For example, if somebody mentions “@mattfreedman” in their comment, this plugin will check with Twitter to see if the user “mattfreedman” exists (which is does) and when it does, it will convert it into “<a href="http://twitter.com/mattfreedman" rel="nofollow ugc">@mattfreedman</a>“.</p>
<p><strong>Please note: As this plugin converts usernames on the fly (<em>whenever and everytime</em> somebody views the comments), and checks Twitter for every username (to ensure it’s valid), I <em>strongly</em> recommend using a caching plugin such as <a href="https://wordpress.org/extend/plugins/wp-super-cache/" title="WP Super Cache" rel="ugc">WP Super Cache</a>. Which will not only lessen the load on Twitter’s servers, but also speed up page loads.</strong></p>
<p>Although it says this plugin requires WordPress 2.6, I see no reason why it wouldn’t work with earlier versions, I just haven’t tested it with earlier version.</p>
<p><em>This plugin requires cURL to be installed on your server, and has only been tested with PHP 5.2.x.</em></p>


Twitter Links

Converts Twitter usernames mentioned in comments (eg. @mattfreedman) with a link to the mentioned user's Twitter profile page.

Checkdomain

<h4>About this Plugin</h4>
<p>A wordpress plugin to automatically share posts via twitter and facebook with a<br />
CommentGrabber to grab all comments posted on a facebook post which is connected<br />
with a blog post. The Comment Grabber requires wp-cron to run as a real cronjob<br />
to work properly. See “<strong><a href="https://wordpress.org/extend/plugins/wordpress-autosharepost/installation/" rel="ugc">Getting Started</a></strong>”<br />
under “<strong><a href="https://wordpress.org/extend/plugins/wordpress-autosharepost/installation/" rel="ugc">Installation</a></strong>”<br />
to get more information.</p>
<h4>Special Thanks</h4>
<p>I want to thank all my colleageus at <strong><a href="http://www.checkdomain.de/" rel="nofollow ugc">Checkdomain</a></strong> who<br />
supported me to create this WordPress-Plugin</p>
<h3>Feedback</h3>
<p>Any feedback, comments or improvements are welcome. Feel free to contact me at<br />
b.paap@checkdomain.de</p>
<p>If you have found any bugs or want to support this project with your bugfixes feel<br />
free to fork this project and do a pull request. I will then review your changes<br />
and merge them.</p>
<h3>Future Plans</h3>
<p>As soon as Google releases their API for Google+ I will implement a possibility<br />
to share posts to Google+ as well.</p>
<p>If you have any whishes for more social networks/platforms to be included feel<br />
free to contact me at b.paap@checkdomain.de</p>
<h3>Information for Theme Designers</h3>
<p>If you want to support this plugin in your theme and give facebook comments a<br />
special appeareance you can check with something like this, if the current<br />
comment is a facebook comment:</p>
<pre><code><?php if ($comment->comment_type == 'facebook'): ?>
</code></pre>


WP-AutoSharePost

This plugin automatically shares posts to facebook and twitter with predefined messages and grabs the facebook comments.

Twitter Links vs WP-AutoSharePost