The is possible the best SEO Plugin online, This is the best 5 in 1 plugin and here are some of the features.
1. It has an optimization feature where you can optimize your page and post
2. It has a Rank Checker feature were it tracks the ranking details for every incoming keyword
3. It Auto tags your content with relevant incoming keywords
4. It auto syndicates your content to the Top Web 2.0 Properties and builds authority backlinks and indexes you pages instantly.
5. It builds HTML, XML, Image and Video sitemaps
This is SEO Automation at its best