UGC can be genuinely valuable for SEO — it adds fresh, ongoing content and often naturally covers long-tail questions and phrasing a site's own writers might not think to include, and product reviews specifically contribute real E-E-A-T-relevant signal (genuine, first-hand user experience). The risk is quality control: unmoderated UGC is a common vector for spam links and low-quality content, which is why Google recommends using the rel="ugc" attribute on links within user-submitted content, explicitly flagging them as not editorially endorsed by the site itself, separate from the site's own content and outbound links. A site accepting UGC needs an active moderation process, since unmoderated comment sections and forums are a frequent target for spam link injection at scale.
Example
A SaaS review platform lets users submit reviews as UGC, automatically tagging any links within review text as rel="ugc" and moderating submissions before publishing to prevent spam link injection.
Related terms
Related terms
Related Reading
404 Error
A 404 error is the standard HTTP status code returned when a requested page doesn't exist on the server — the classic 'page not found' response.
A/B Testing (SEO)
A/B testing in SEO is the practice of showing two versions of a page element — usually a title tag, meta description, or on-page element — to see which one earns a better click-through rate or ranking outcome.
AI Citation
An AI citation happens when an AI assistant like ChatGPT, Perplexity, Claude, or Gemini references or links to a specific page as the source for part of its answer.
