Seos did it to help pass PageRank to the more important pages, sure. But it’s also about not really allowing the bots to follow certain other pages like links t

Seos did it to help pass PageRank to the more important pages, sure. But it’s also about not really allowing the bots to follow certain other pages like links to tags pages or other pretty much useless pages on the site. I’ve also seen people add nofollow on links to privacy policy and terms of service pages.