Jesse Lee

Basically, WP SEO Supercharger will retrieve a list of related posts from your site and compile them into one new post based on search query!
Important Note
To get an overview of how WPSS works, please pay attention to “FAQ” section.
Features include:
<ul>
<li>Search Query Filter</li>
<li>Email notification with keyword position</li>
<li>Three Related Post Retrieveing Methods</li>
<li>Ability to exclude particular categories and posts</li>
<li>Customized post template</li>
</ul>

WP SEO Supercharger

Andrew Ozz

Excerpt Editor provides a convenient place for creating and editing all excerpts. It can also add custom excerpts for pages (not possible without a plugin). Features: auto-creating excerpts when publishing new Posts and Pages, displaying customisable excerpts from the content for posts without an excerpt, appending excerpts from the latest posts to each Post or from the sub-pages to each Page, replacing the content for all archive and tags pages with excerpts (eliminates content duplication for SEO).
The excerpts can be used in the RSS feed, displayed on the Home or Archive pages and/or used for meta descriptions. The excerpts can be in any language supported by WordPress and the plugin contains .pot file to facilitate translations.

Excerpt Editor

Quick edit or create excerpts for both Posts and Pages, auto-generate and append excerpts or replace the content with excerpts.

WP SEO Supercharger vs Excerpt Editor