Automatically optimizes your titles for search engines
Generates META tags automatically
Avoids the typical duplicate content found on Wordpress blogs
For Wordpress 2.3 you don't even have to look at the options, it works out-of-the-box. Just install.
You can override any title and set any META description and any META keywords you want.
You can fine-tune everything
Backward-Compatibility with many other plugins, like Auto Meta, Ultimate Tag Warrior and others.

http://wordpress.org/extend/plugins/...-one-seo-pack/

James.