I’ve come across this dofollow and nofollow topic quite several times in many forums and I’ve replied to them as per my knowledge. What I know is secondary, but I want to know clearly about the topic and how far they would impact in popularizing the website.

By utilizing the do-follow attribute, you are allowing google’s robots to follow that link. By utilizing the nofollow attribute, google robots are unable follow the link making it a poor choice for those looking for quality links.