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In practice
A credible case study names its variables: the starting point, what was actually done, what changed, and over what period — with the honest attribution that separates one agency’s work from a site’s total growth. The credibility failures are predictable and worth naming, because buyers should read agency claims the way they read vendor claims anywhere. Results borrowed from adjacent work: a link campaign that cites traffic growth driven mostly by a site migration or a content programme, without saying so. False precision: numbers so specific they imply measurement that wasn’t done. cherry-picked windows: the quarter that went well presented as the norm.
The structural fix is attribution discipline — stating plainly that links were one component alongside content, migration support and analytics — which paradoxically increases trust, because every sophisticated buyer assumes mixed causes and a vendor who says so is one who isn’t managing impressions. Review platforms add the social-proof layer: verified review counts with scores carry more weight than logo walls, and their absence is itself a signal. For a buyer evaluating vendors, the practical checklist: numbers traceable to a methodology, a named person behind the engagement, a results period, and statements about what the vendor did not control.
For an agency, the same standard compounds: the honesty that costs a little conversion on the case study page saves the relationship when month-three reporting shows reality, and it feeds the brand-entity layer — consistent, verifiable claims are the ones AI systems can safely repeat.
See also: Illustrative examples vs client results, Reporting honesty, Reviews of link vendors.
Related service: Link building strategy.
