indowp

This Plugins that makes your site SEO boosting by making your defaut description change everytime you add new post on homepage only. This plugins usefull for those running news site or you are an up to date blogger. 
Many others SEO Plugins doesnt have this feature, they just make keep static description and makes google bored if you have an up to date blog.
<h4>Features</h4>
<ol>
<li>Automatically generate description on your homepage based on last 3 title post, this is real good for your site SEO.</li>
</ol>

Wp SEO Auto Generating Metatag Description

This Plugins that makes your site SEO boosting by making your defaut description change everytime you add new post on homepage only.

Andy Whalen

WP Hooks is a plugin for WordPress that allows you to add JavaScript, HTML, or other code to your 
header and footer without modifying your theme. WP Hooks uses the wp_head() and wp_footer() hooks 
built in to WordPress to add content to your header and/or footer. It’s great for those who have 
custom JavaScript, CSS, or other code (Google Analytics, meta tags, etc.) in their header or footer 
and don’t want to or can’t modify their theme.
Find <a href="http://amwhalen.com/blog/projects/wp-hooks/" rel="nofollow ugc">more instructions and discussion</a> on the WP Hooks home page.

WP Hooks

WP Hooks allows you to add JavaScript, CSS, meta tags, etc. to your header and footer without modifying your theme.

Wp SEO Auto Generating Metatag Description vs WP Hooks