jonbullock

Applies the following simple search engine optimisations to your blog:
<ul>
<li>Shows “Site Title” in page title always no matter what content your viewing</li>
<li>Shows any content descriptor (page/post title etc.) first in page title</li>
<li>Uses post excerpt as value of “description” meta tag</li>
<li>Uses post tags as value of “keywords” meta tag</li>
<li>Uses tag name as value of “keywords” meta tag when viewing posts for a tag</li>
<li>Uses category name as value of “keywords” meta tag when viewing posts for a category</li>
<li>Uses date as value of “keywords” meta tag when viewing posts for a date</li>
</ul>
That’s it really, pretty simple stuff.

Basic-SEO

Applies basic search engine optimisations to your WordPress powered site.

zubovd

This plugin adds the ‘Last-Modified’ header to each post and returns the ‘304 Not Modified’ header to the client without a body in the response if he sent the ‘If-Modified-Since’ header and the post has not changed since that date.

Last-Modified and If-Modified-Since Headers

Add Last-Modified anв support If-Modified-Since Headers

Basic-SEO vs Last-Modified and If-Modified-Since Headers