What is dofollow?
Simply put, “dofollow” is a plain HTML link that indicates to users that text is hyperlinked. It also tells search-engine spiders to crawl your link.
If you’re familiar with basic HTML, “dofollow” links should be very familiar:
<a href="http://example.com">Your Anchor Text</a>
The term “dofollow” is used to describe a type of link in conversations like we’re having today. You will notice there isn’t an actual “dofollow” link relationship attribute, which is an HTML tag that tells the web browser the relationship of the linked document with the current document.
What is nofollow?
The link relationship attribute “nofollow” looks like this:
<a href="http://www.example.com" rel="nofollow">Your Anchor Text</a>
Still visible and clickable to users, what “nofollow” does is tell search-engine spiders to not follow your link, resulting in the following:
Spiders will not follow the link
Users may still click and follow the link
PageRank is not transferred
Anchor text is not transferred to your link profile