How to Make blogspot blogger blogs nofollow
By Default all the links in the comments for blogger blogs are nofollow. So if you want to provide credit to your users and if you want to make the links in the comment dofollow then follow these procedures.
Go to Design and edit html
Then click on expand widget templates
then search for
<a expr:href='data:backlink.url' rel='nofollow'>
Then change nofollow to Dofollow