all in one seo are a wordpress plugin that give your wordpress blog a seo features like site title, description, keyword meta tag and also give robots=“noindex” meta tag to prevent duplicated content is your sites, the will not index pages like http://www.seomust.com/2007/09 but will index pages like http://www.seomust.com/affiliate-links-and-seo.html .

read more about it and download the plugin at wordpress seo plugin