A citation is an attribution to a source that backs a statement — a URL, document, or named publisher. It is useful when readers or systems need to verify a claim instead of trusting fluent wording alone.
Whilst citations look like proof, in practice models can cite the wrong page or a generic source that barely supports the claim. For example, an answer links your homepage while quoting a competitor’s spec. We often recommend claim-dense answer pages and checking citation gaps on a fixed prompt set — presence of a link is not the same as winning the answer.