What is a No-Follow Link?
A no-follow link is a link that does not increase page rank or help page placement in the SERP. The main purpose of a nofollow link is to prevent a website from passing search engine authority to a different webpage. To avoid any connection to spam content or violation of webmaster rules, search engine crawlers are prompted to not follow or “pass credit.” No-follow attributes are identified by major search engines (i.e.: Google, Yahoo, Bing, etc.). No-follow elements help reduce spam.