If you use blogger, you can find your comments of authors link is “nofollow”.

What is “nofollow”?

I suggest you look at this first: About rel=”nofollow”.

Why change blogger from “nofollow” to “dofollow” ?

“Dofollow” can influence the link target ranking in the search engine index, so whenever someone input their URL address in comment URL form,  their site ranking will automatically increased, but only if the site they put that URL have high PageRank (PR). If the PR is 0 or less than their site, it still can be increased in the search engine index but only a little.

Chage this aslo have some disadvantage, for example like spammer, they can send spam comments, if you change, i suggest you make a setting of comments in your blogger.

Now you can change it like this:

change blogger from "nofollow" to "dofollow"

Login to your blogger dashboard and click on the Layout . Then, click on the Edit Html Sub-tab for Templates. Then tick on the Expand Widgets (As shown below)

Go for you templete and look for the rel=’nofollow’, and Delete it!

<a expr:href=’data:comment.authorUrl’ rel=’nofollow’><data:comment.author/></a>
<b:else/>
<data:comment.author/>

Then Save Your Template.

Now all is ok.