I use the plugins below for better Search Engine Optimization (SEO) on the WordPress platform, could you suggest others?
All in One SEO Pack – Out-of-the-box SEO for your WordPress blog.
(http://wordpress.org/extend/plugins/all-in-one-seo-pack)
Google XML Sitemaps – This plugin will generate a special XML sitemap which will help search engines like Google, Yahoo, Bing and Ask.com to better index your blog.
(http://wordpress.org/extend/plugins/google-sitemap-generator)
SEO Slugs – Removes common words like ‘a’, ‘the’, ‘in’ from a post slugs to improve SEO.
(http://www.vretoolbar.com/news/2007/04/01/seo-slugs-wordpress-plugin)
Headspace2 – Manage meta-data and handle a wide range of SEO tasks.
(http://urbangiraffe.com/plugins/headspace2)