In the world of SEO, there are two words discussed most of the time, that are Dofollow and Nofollow.Link building is the crucial part of any successful SEO business.There are lots of dofollow blogs/forums & nofollows too on Internet but building backlink from dofollow blogs sometimes bad. That is just because the dofollow backlink you are getting is either from unreliable source. The main thing to be considered in On-page SEO optimization is that you should get backlink from the relevant and reliable resource.
Why You Should Add Nofollow tag to External Hyperlink?
The main rule in SEO world is dofollow links are important while nofollow links are less important. You need to know that what is dofollow first and then only you can understand the value of dofollow and nofollow links on any hyperlinks. Dofollow links are links which we want Google to follow from our page and nofollow links are those links which we don’t want Google bot (Or any other search engine bots) to follow. So whenever you are linking your site to any bad domain or unreliable/untrusted sites, we use nofollow link attributes.
By default all blogging systems add dofollow links whenever you are linking any sites.In blogger there is option to add nofollow attribute to any hyperlinks while there is no such systems in WordPress.You need to manually add Nofollow tag or by using WordPress plugins.
So from now whenever you are linking your blog post article to any affiliate links, spammy or untrusted websites, make sure that you are adding nofollow attribute to it.It is good practice to add nofollow tag to external links or such websites.
How to add Nofollow Attributes to a link?
So Here is the structure of general any HTML hyperlink, taken from w3schools.com.<a href=”http://www.ehowportal.com”>Visit Ehowportal</a>