The first feature added to the Stallion WordPress SEO Plugin were the Not Index features, the Not Index features are a replacement for the damaging robots noindex meta tags features that’s part of the Yoast WordPress SEO plugin and the All In One SEO Plugin.
The noindex robots meta prevents the indexing of a webpage, the link benefit that would normally be ‘spent’ on a webpage (spent generating Google SERPs) that’s noindexed is wasted.
The Stallion WordPress SEO Plugins Not Index features (uses canonical URLs) prevents the indexing of a webpage, the link benefit that would normally be ‘spent’ on a webpage that’s Not Indexed is mostly recycled back to the webpage within the canonical URL tag.
Continue Reading Stallion WordPress SEO Plugin Documentation