What Are Dofollow And Nofollow Backlinks
Non-follow link is a link that contains a rel = "nofollow" attribute in its HTML code. This attribute tells search engines not to exceed the authority from the link page to the destination page. Thus, noffollow links have a very small value in SEO views.
The nofollow attribute was introduced in 2005 by Google, Yahoo and MSN to combat spam comments by giving webmasters the option to reduce the number of specific links.