Just get more out of your wordpress blog by using this wonderful plugin from Uberdose. It is a must have plugin for your blog. It generates meta tags (Meta Description and Meta Keywords) automatically and rewrites titles as per your choice.
Automatically optimizes your Titles for search engines.
Generates META tags automatically
Avoids the typical duplicate content found on WordPress blogs
For WordPress 2.3 and later 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.