wackey

This plug-in is Twitter “@Anywhere” API and “Topsy” API using. 
Visitor’s twitter account can be attested putting up connected button to the blog entry. 
After it attests it, link and blog owner’s following buttons and blog owner’s twitter profile can be displayed. 
Furthermore, the visitor takes side with the page by visitor’s account and it is possible to contribute. It is default and there are url on the page and blog owner’s twitter account. As a result, my account and blog URL will flow out on twitter, and the conversation extends.
<h3>Requirements</h3>
<ul>
<li>WordPress 2.9 or later</li>
<li>PHP 5.0 or later</li>
</ul>

Tw Anyware comment system

Add Twitter anyware API,connect and tweet,follow.And Topsy API using.It displays it like the comment column.

DEPRECATION NOTICE: Twitoaster and its API will be shut down this Sunday (March 20th). That means this WordPress Plugin will cease to function (like any other service relying on Twitoaster API). <a href="http://blog.twitoaster.com/twitoaster-shutting-down" title="Twitoaster shutting down" rel="nofollow ugc">Read the full Announcement here</a>
Twitter Comments system. Give to you readers the possibility to send comments via Twitter! Automatically retrieve Twitter Replies and/or Twitter Retweets to your Blog’s Posts. These Twitter mentions are handled like Posts Comments, using WP built-in comment system.
Here is how Twitter Comments work:
<ol>
<li>You Post an article on your blog</li>
<li>You update your Twitter status (or let the plugin do it for you)</li>
<li>You automatically get all related Twitter Replies and/or Twitter Retweets as comments to your Post</li>
</ol>
The plugin also brings two widgets:
<ol>
<li>Analytics charts showing how many Twitter Replies and Twitter Retweets you are receiving</li>
<li>Listings of your 20 most recent Twitter Conversations</li>
</ol>

Twitter Comments – Twitoaster

Twitter Comments system. Automatically retrieve Twitter Replies and/or Twitter Retweets to your Blog's Posts using WP built-in comment system.

Tw Anyware comment system vs Twitter Comments – Twitoaster