What is Dofollow vs Nofollow?
Link attributes that tell search engines whether to pass ranking signal through a link. Dofollow passes equity; nofollow / sponsored / ugc do not.
Every `<a>` tag is dofollow by default — search engines treat the link as an endorsement and pass ranking signal (PageRank) to the destination. Add `rel="nofollow"` to opt out — Google won't pass signal but may still crawl. In 2019 Google added two more: `rel="sponsored"` for paid/affiliate links and `rel="ugc"` for user-generated content (comments, forum posts). All three are 'hints' now, not directives — Google may still pass some signal at its discretion. When to use: nofollow for low-trust outbound links you don't want to vouch for; sponsored for any paid placement (legally required disclosure); ugc for anything users contributed. Internal links are almost always dofollow.