WordPress.org

Applies the following simple search engine optimisations to your blog:

• Shows "Site Title" in page title always no matter what content your viewing
• Shows any content descriptor (page/post title etc.) first in page title
• Uses post excerpt as value of "description" meta tag
• Uses post tags as value of "keywords" meta tag
• Uses tag name as value of "keywords" meta tag when viewing posts for a tag
• Uses category name as value of "keywords" meta tag when viewing posts for a category
• Uses date as value of "keywords" meta tag when viewing posts for a date

That's it really, pretty simple stuff.