Originally Posted by beta-tester

meta description is all what you'll need as keywords are ignored by google and started to get ignored by msn and yahoo too.
Head-meta description is the plugin name i use on my blogs.... it's great cuz it grabs few words from your posts and make desc of them, hence making every post unique with description. It also allows you to write your own desc for posts.

All in all for me desc. is must have

Hope it helps