How To Change Dofollow Attribute Comments in Blogger

Dofollow is a term given to web page or sites / blog which provides (outbound) links to the comments. whereas Nofollow is the opposite.

Here are the advantages and disadvantages of each, Dofollow and Nofollow..

Dofollow
The advantages of the dofollow blogs (sites) is able to increase the blog traffic, as will a lot of visitors who leave their "link traces", that will attract more advertisers who are interested in displaying their ads
The risk of dofollow blogs is that you should be ready to receive comments from spammers who comment without reading the contents of your article or put not relevant link.

Nofollow
The advantages of nofollow blogs is able to filter out spam comments from visitors, The comments obtained truly reflects what the visitors (readers) opinion and not just a "polite" comments and wanted to leave a link. 
The disadvantages is the visitors and advertisers will be reduced from your blog, because usually they will find DoFollow blogs to enhance their position in search engines.

Actually default setting attribute comments from blogger is Nofollow. To tun it into Dofollow, here are the steps we have to do.

Log in to your Blogger >> Dashboard >> Layout >> Edit HTML >> and check the Expand Widget Templates.
Find this script

href='data:comment.authorUrl' rel='nofollow'

and deleted  rel='nofollow', and save template. simply as that...

Note:
To determine whether a blog, is DoFollow or Nofollow. just View their page source, right click on a web page, and select page source, find the href code, if followed by the code rel = 'nofollow' it means that the blog is nofollow, if not there is DoFollow. For an easier way just find rel = 'nofollow' if we do not find then that blog is dofollow.