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SEO Company Testimonials

If you are vetting an SEO agency, look for testimonials with names, numbers, and live links; if you are building links, only offer honest quotes for products you actually use.

Beginner3 min readUpdated 2026-07-27Notes by Callum Bennett

Start here

  • Verify a testimonial by checking if the named company actually exists and if the quote appears on their website.
  • Demand specific numbers: a testimonial that says "increased traffic by 40% in 3 months" is far more credible than "great service."
  • If you plan to offer a testimonial for a backlink, only do so for a product or service you use and recommend honestly.
  • Before writing a testimonial, check the vendor's site to see if they already link out from their testimonials page; if not, your effort may not earn a link.

Plain-English take

A testimonial for an SEO company is like a Yelp review for a plumber. You want to know if they fixed the problem, how fast, and whether they were fair. For link builders, testimonials are a trade: you give a genuine quote, they give you a backlink. But the quote must be real. I once audited an agency that plastered its homepage with quotes like "Helped us rank #1". Clicking through to the sites revealed half the testimonials were from domains that redirected to the agency's own network. That is a red flag. A strong testimonial answers three questions: What was the problem? What service fixed it? What result came from it? For example, "After 4 months of [white label seo](/white-label-seo/), our lead generation from organic search increased 73%." That number gives you something to verify. Without a number, you are trusting the writer's enthusiasm, not the outcome. I now apply this rule: if the testimonial does not name a person, a company, and a metric, ignore it.

When it actually matters

Testimonials matter most when you are vetting an agency. If every quote is from a no-name brand or uses only vague praise, walk away. I once shortlisted an agency based on a testimonial from a well-known SaaS company. I checked the company's [backlink profile](/backlink-profile/) and could not find the testimonial live anywhere. The agency had probably fabricated it. Testimonials also matter when you are building links. Offering a genuine testimonial to a vendor you use can earn an [editorial link](/editorial-links/) from their website. I have done this with two SaaS tools I used daily. Each time I wrote a short, specific paragraph mentioning the exact feature that solved my problem. Both vendors published the testimonial with a link. The links are natural and relevant. But there is a counter-argument: some SEOs argue that testimonial links are no better than paid links because they are traded. I disagree. If you genuinely use the product and the vendor publishes the quote voluntarily, it is an endorsement, not a bribe. [Digital PR](/digital-pr/) campaigns often use the same principle. The edge case: what if the vendor does not link out? Many big brands publish testimonials without links. In that case, the trust signal for your own site is weaker, but the relationship might still be worth building. I always run a [backlink audit](/backlink-audit/) on a vendor before I write a testimonial. If they have not linked to any client from their testimonials section, I skip the effort.

What I got wrong

I used to chase any testimonial backlink regardless of authenticity. I once wrote a glowing review for a keyword research tool I had used only twice. The quote was generic: "Great for finding long-tail keywords." The company never published it because the quote was too thin. That taught me that testimonial link building requires honest enthusiasm. Another mistake: I assumed a testimonial from a major brand meant the agency was good. I later found out the agency had paid the client for the quote. That is against Google's guidelines and risks a penalty. I changed my mind about the value of anonymous testimonials. Early in my career, I thought they still carried some weight. Now I ignore them entirely. One thing I am still unsure about: whether a testimonial link carries the same authority as an [outreach seo](/outreach-seo/) placement. I suspect it is close, but I have not tested it rigorously. My current rule: only offer testimonials for products I use at least weekly, and only accept testimonial links from vendors who publish the quote alongside my full name and website.

Next step

Quick answers

How do I verify if an SEO company's testimonial is real?

Contact the person named, check their LinkedIn profile, and see if the testimonial appears on the client's own website. If the testimonial is anonymous or uses a generic email, assume it is fabricated. Google's guidelines penalise fake reviews, so verification is crucial.

Can a testimonial backlink hurt my site if the testimonial is fake?

Yes. If Google detects that you wrote a fake testimonial solely to manipulate PageRank, that link could be considered part of a link scheme. Your site could receive a manual action or algorithmic demotion. Only offer testimonials you stand by, and never manufacture quotes.

Should I include a testimonial on my own site to attract link building opportunities?

If your client testimonials include real names, companies, and links, they signal trust to potential customers and give you content to pitch for link exchanges. But only if the testimonials are genuine and the links are relevant. Fake testimonials damage credibility.

Sources

Primary documentation is linked directly. Anything commercial is marked nofollow.

  • Google Search Central — Backs up the warning about fake reviews and link schemes.
  • Search Engine Journal — Provides practical guidance on testimonial link building outreach.
  • Moz — Offers best practices for evaluating agency testimonials and link quality.

Notes from Callum Bennett.