Zane Matthew

<p>This plugin places a comment form similar to Facebook, only displaying a single line textarea, which submits when the user presses “enter/return” on their keyboard.</p>
<h4>Features</h4>
<ul>
<li>Single line textarea</li>
<li>Auto expanding textarea</li>
<li>AJAX submitted comments</li>
<li>AJAX loaded comments</li>
<li>Admin settings for additional styling</li>
</ul>


Inline Ajax Comments

Displays a single line textarea for entering comments, users can press "enter/return", and comments are loaded and submitted via AJAX.

Wooliet

<p>“Read More Right Here” uses the jQuery framework already included with WordPress installations. RMRH hooks into the WordPress creation of the<br />
“more” link and adds a custom class.  When your blog is loaded, all links of this custom class are modified to no longer send the user to that post’s<br />
single page display when clicked. Instead, the WordPress database is queried for that specific post, and all content after the  tag (i.e. only what you need) is returned.<br />
The new content is then immediately displayed to the user, inline with the opening content.</p>
<p>For more information, please visit the <a href="http://www.wooliet.com/wp-plugins/" rel="nofollow ugc">Woolie T. WP plugins page</a>.</p>

Inline Ajax Comments vs Read More Right Here