Maximize your WordPress SEO blog or website with a few simple changes. WordPress is search engine optimization (SEO) friendly out of the box.
Follow the 8 Point WordPress SEO Checklist and you’ll be 90% there, as far as search engines go. With a SEO plugin (I use one by Yoast), or SEO-aware theme, you can get to 95%. To get to 100% (or at least 99%), you need to also adapt how your write your content.
This video from Google Webmaster Help shows you how to avoid 5 common mistakes in SEO and improve your content (which improves your results!).