Mark Jaquith

Michael Adams (mdawaffe)

Other preview plugins don’t know what sort of changes WordPress will make to a 
visitor’s comment, but this plugin uses AJAX and other buzzwords to send each 
previewed comment through WordPress’ inner voodoo.
The result? With the click of a button, your site’s visitors can preview their 
comments exactly as they will appear when they submit them for realies.
Requires PHP5.

Ajax Comment Preview

Visitors to your site can preview their comments with a click of a button.

bennettmcelwee

Evermore automatically abbreviates all posts when they appear on a multiple-post page such as the main blog page. It has the same effect as putting <!–more–> after the first paragraph of every post. All formatting and HTML tags are preserved in the abbreviated post.
If the post already has a <!–more–> in it, then this plugin does nothing to it and the existing <!–more–> will behave as usual.
If you want to disable the plugin for any specific post, then include the codeword <!–nevermore–> in the post. This won’t show up in the post, but it will prevent the post from being abbreviated by Evermore.
To change the length of the preview that Evermore creates, log in to your WordPress administration console and go to Settings, then click Evermore. You will see the Evermore configuration screen where you can set the following options.
<ul>
<li>The number of paragraphs each preview should contain</li>
<li>The minimum length of the preview. Sometimes, the first paragraph of a post can be very short (just a short sentence, or a picture). This option allows you to add extra paragraphs to make the preview a more reasonable length.</li>
<li>Where to put the “read more” link: either at the end of the last paragraph, or on a new line by itself</li>
</ul>

Evermore

Evermore automatically abbreviates all posts when they appear on a multiple-post page such as the main blog page.

Ajax Comment Preview vs Evermore