WordPress SEO resources and tips

WordPress is a popular open-source blogging platform that has a powerful set of features and can be extended through the use of free plug-ins, of which there are thousands.
 
To maximize the usefulness of WordPress as a business tool, you should take advantage of every opportunity to optimize your blog for search engines.
WordPress Documentation

WordPress' Codex includes a page dedicated to SEO topics and this page is a must-read for anybody operating a WordPress blog.
This page includes important information about setting up SEO-friendly permalinks, maintaining a healthy Robots.txt file for search engines and making sure that you're taking advantage of feed submissions. It also links to websites with useful SEO information.
WordPress Plugins

There are a number of great plug-ins that make it easy to implement SEO techniques with WordPress.

All in One SEO Pack

The "All in One SEO Pack" is one of the most downloaded WordPress plug-ins and performs a number of functions, including optimizing your page titles, adding META tags automatically and removing common duplicate content.

Google XML Sitemaps

Another popular plug-in, Google XML Sitemaps creates a Google sitemaps compliant XML-Sitemap for your blog.

KB Robots.txt

This plug-in enables you to create and edit Robots.txt files from within the WordPress admin.

Redirection

Redirection helps you monitor 404 errors, automatically manage 301 redirections when a post URL changes and has a powerful set of features that helps you redirect users to different pages based on various conditions.

Breadcrumb NavXT

Add breadcrumb navigation to your WordPress blog with this plug-in.

WordPress Related Posts

This plug-in allows your blog to feature "related posts."

SEO Friendly Images

SEO Friendly Images automatically adds the ALT and TITLE attributes to images.

Nofollow Case by Case

This plug-in enables you to decide which comments, pingbacks and trackbacks have or don't have the "nofollow" attribute which is otherwise automatically added by WordPress.