Adds rel="nofollow" to posts external links unless specified otherwise.
The plugin allows you to manage the values of the "rel" attribute in comment links ("ugc", "nofollow").
Browsing a site as an admin, icons are added to external links indicating their nofollow status. Clicking the icons toggles nofollow status via Ajax.
WordPress Fix HTML5 Validation
Just simple, if you use this plugins, rel=nofollow and target=_blank will be insert automatically, for all the external links of your website posts or …
Automatically inserts rel="nofollow" into all the external links on your wordpress posts or pages.