Link Building
UGC Tag
The rel="ugc" attribute is an HTML link attribute introduced by Google in September 2019 to identify hyperlinks found within user-generated content (UGC) — such as blog comments, forum posts, wiki contributions, and social media profile links. It signals to Google that these links are not editorially placed by the site owner.
UGC tag compliance is audited using Screaming Frog's custom link attribute extraction and Ahrefs' Backlink Analytics. Websites that host large volumes of user-generated content (forums, review platforms) should implement rel="ugc" on outbound links to protect their domain from being used as a vehicle for link manipulation.
Authority Links
Related Terms
Link Building
Nofollow Tag
Nofollow tag is the href rel tag that gives the signal to the search engine bots to disregard specific links.
Link Building
Sponsored Tag
The "sponsored tag" is used for hyperlinks that are advertisements, sponsored, or paid placements.
Link Building
Backlink
An inbound hyperlink from one website to another — historically the strongest single ranking signal in Google's algorithm, treated as a vote of confidence in the linked page's authority.
Link Building
Dofollow Link
When an external link from a website is marked as "dofollow", it means that the origin site passes its authority to the destination site and Google knows about it.