How should advertisers judge product review sites before buying ad space?
Part of Lookalike websites

The short answer
A product review site is worth advertising on when it shows real testing, publishes its method, discloses affiliate income next to the links, and keeps advertising separate from verdicts. Buyers check those signs on recent reviews, rule out review farms that only rewrite product listings, and decide case by case where their own brand is reviewed.
Key takeaways
- Review pages exist to help readers compare products and choose, which makes good review publishers valuable to advertisers and can attract weak imitators.
- Affiliate income does not disqualify a review site; hidden affiliate income and verdicts that follow the money do.
- The FTC's Endorsement Guides, updated June 29, 2023, and its consumer reviews rule, effective October 21, 2024, set the US rules review publishers operate under.
- Evidence of hands on testing, such as original photos, measurements and stated drawbacks, is a clear line between a review publisher and a review farm.
- Advertising beside reviews of your own product needs a written rule, because the FTC says a display ad purchase that shapes editorial content can make a review deceptive.
What makes a product review site worth advertising on?
Product review sites sit at the point where readers compare options and choose. That is why advertisers want to be there, and also why the category can attract operators who publish the look of a review without the work. The planner's job is to separate publishers that test products from sites that summarize them for commission.
| Kind of site | What it publishes | Strength for advertisers | Weakness for advertisers |
|---|---|---|---|
| Testing publisher | Reviews based on its own use and measurement of products, with a stated method | Credible context, engaged readers and content that holds up to scrutiny | Smaller output, and it may set strict rules on which ads run near reviews |
| Consumer review platform | Ratings and comments written by buyers, sometimes with editorial guides | Large volume and coverage of many products and local services | User written content varies in quality, and review integrity depends on moderation |
| Affiliate roundup site | Ranked lists of products with buying links, written from specifications and other reviews | Broad coverage of buying questions, which can be well organized | Verdicts may follow commission rates, and some such sites are thin or templated |
Sites can mix these models. A testing publisher can run affiliate links, and a consumer platform can publish tested guides. What matters is whether each review shows the evidence behind its verdict, which can be checked on a handful of recent articles before the site joins a plan. The lookalike websites hub explains how to expand from one trusted review publisher to others like it.
How do affiliate links affect a review site's independence?
Affiliate links pay the publisher a commission when a reader buys through them. That gives the site a reason to recommend products with higher commissions, but it does not prove the site does so. The FTC's guidance treats affiliate income as something to disclose, not something to ban. Its Endorsement Guides FAQ (opens in a new tab) says an affiliate should disclose the relationship to the retailer "clearly and conspicuously on your site", and offers "I get commissions for purchases made through links in this post" as example wording.
Placement matters to the FTC. The same FAQ says "The closer the disclosure is to your recommendation, the better", that readers may miss a disclosure at the top or bottom of a page, and that a single disclosure on a home page is not enough because visitors may read individual reviews without seeing it. It adds that "Paid link" right next to an affiliate link should be adequate, while "Commissionable link" is probably not a clear disclosure. A buyer can check all of this in a minute on any review page.
What do the FTC Endorsement Guides require from review publishers?
The FTC announced updated Endorsement Guides on June 29, 2023 (opens in a new tab). The update added a principle covering "procuring, suppressing, boosting, organizing, publishing, upvoting, downvoting, or editing consumer reviews" in ways that distort what consumers think of a product, added a definition of clear and conspicuous, and explained the potential liability of advertisers, endorsers and intermediaries. Separately, the FTC's consumer reviews and testimonials rule (opens in a new tab), 16 CFR Part 465, was published on August 22, 2024 and took effect October 21, 2024. The table states facts from these sources, not legal advice.
| Topic | What the FTC source says | Source |
|---|---|---|
| Affiliate disclosure | Disclose the relationship to the retailer "clearly and conspicuously on your site" | Endorsement Guides FAQ |
| Free products | "If you get free meals from a restaurant that you review, you should let your readers know" | Endorsement Guides FAQ |
| Display ads and verdicts | If "the purchase of a display ad positively impacts the editorial content of the review, the review could be deceptive" | Endorsement Guides FAQ |
| Selling ad space | Acceptable if it "doesn't impact what products you review, what you say about them, or the placement or prominence of those reviews" | Endorsement Guides FAQ |
| Company controlled review sites | A business may not materially misrepresent that a website it controls provides "independent reviews or opinions" about a category that includes its own products | 16 CFR 465.6 |
| Review suppression | Prohibits using "an unfounded or groundless legal threat, a physical threat, intimidation, or a public false accusation" made with knowledge or reckless disregard of its falsity, to prevent a consumer review or cause its removal | 16 CFR 465.7 |
In Canada, the Competition Bureau warned in January 2024 (opens in a new tab) that people who write or allow reviews that mislead consumers "could be liable under the Competition Act", and that employees must disclose all connections they have with the business.
How do you spot a review farm with no real testing?
A review farm publishes many review shaped pages without using the products. The pages can be well formatted and cover the main buying questions, which is why they rank and why they show up in topic searches. The difference shows in evidence. Google's guidance on writing high quality reviews (opens in a new tab) asks reviewers to "provide evidence such as visuals, audio, or other links of your own experience", to "share quantitative measurements" and to "discuss the benefits and drawbacks of something, based on your own original research." Those are the things a farm cannot fake cheaply.
Testing evidence to look for on three recent reviews
- Photos or video show the reviewer's own unit in use, not only manufacturer images.
- The review reports measurements or timed tests, with units and conditions.
- Each product reviewed has at least one specific drawback stated plainly.
- A methodology page explains how products are chosen, tested and scored, and names who tests them.
- The review compares products the reviewer handled, not just their specification sheets.
- Reviews are updated with a visible date when a product changes or is retested.
- Disclosures of affiliate links and free products sit next to the links and ratings they apply to.
- The same short list of winners does not appear, word for word, across several unrelated domains.
Review farms also overlap with other kinds of low quality inventory, and the MFA identification guide covers the ad layout and traffic checks that apply to any site. Google's spam policies (opens in a new tab) give a related example under site reputation: an educational site hosting sponsored third-party reviews of payday loans that are distributed to other sites across the web. A review section that does not match the rest of its host site deserves a closer look.
Which review sites fit a brand that is reviewed there?
Brands in reviewed categories face a choice the planner should make explicit: whether to appear on sites that review the brand's own products. There is no single right answer. The FTC FAQ quoted above draws the line at influence: selling ad space is fine when it does not affect what is reviewed or said, and a display ad purchase that positively affects a review could make it deceptive. Both sides of the buy should be able to show the ad and the verdict are separate.
| Situation | Case for advertising there | Case for caution |
|---|---|---|
| The site rates the brand well | Readers comparing options see the brand twice, in the review and in the ad | An ad beside a favorable review can look like payment for it; keep the buy arm's length |
| The site rates the brand poorly | Readers still compare; the ad can carry a point the review missed | The ad may read as a rebuttal and draw attention to the criticism |
| The site has not reviewed the brand | Reach into the category's buying audience | Any later review must be shown to be independent of the ad relationship |
| The site reviews the category, not the brand's products specifically | Strong context with less risk of looking like influence | Context alone does not prove the site tests products |
Four steps for buying on sites that review your products
- Write the rule first. Decide whether the brand will run beside reviews of its own products, of rivals, of the category only, or not at all.
- Keep the buy away from editors. Route the purchase through the media team and the site's ad sales, never through anyone who supplies products for review.
- Record product loans. List every product the brand has sent to the site, so any disclosure question can be answered quickly.
- Review the placement list each flight. Check which reviews now mention the brand before renewing a placement.
How does PlacementGraph help check review publishers?
What does vetting review sites look like on a real brief?
Fictional example
A fictional mattress brand in California
An unnamed direct to consumer mattress maker in Los Angeles wants display ads in California beside sleep and mattress reviews during a spring sale. Its agency starts with 25 review sites that rank for mattress buying questions in California searches.
The planner opens three recent reviews on each. Nine sites show original photos of each mattress, firmness and temperature measurements and a methodology page naming the testers. Eleven sites repeat the same five winners with manufacturer images and an affiliate disclosure only in the footer; several share one layout and one analytics code. Five are retailer buying guides and are set aside as stores.
Four of the nine testing publishers have reviewed the brand. The client chooses a category only rule: ads run on mattress guides and sleep articles, not on pages reviewing its own mattresses or named rivals. The media team buys through the publishers' ad sales, separate from the product team that sends review units, and the list records that rule beside every site.
Frequently asked questions
Is a review site with a sponsored content section still independent?
It can be, if sponsored pages are clearly labeled and kept apart from rated reviews. Check that sponsored pieces carry a visible label, do not appear in ranked lists, and are not linked from verdicts as if they were reviews. If the labels are hard to find, treat the site's independence as unproven.
Can a brand send free products to a review site it advertises on?
They can, but the FTC says reviewers who receive free products should tell readers, and it suggests disclosure next to summary ratings where incentivized reviews may skew them. Keep product loans and the ad buy handled by different people, and record both, so the publisher's disclosure and the brand's records match.
Do consumer review platforms count as product review sites for a plan?
They can, with different checks. The content is written by buyers, so look at how the platform moderates reviews, whether it explains how it handles suspected fake reviews, and whether its sorting puts five star reviews first by default, which the FTC FAQ says can give a misleading picture.
Should a planner exclude every site with affiliate links?
Affiliate links alone are not a reason to exclude a site. Credible testing publishers can run affiliate links, and the FTC treats affiliate income as something to disclose. Excluding every affiliate site could remove strong context. Judge each site on testing evidence, disclosure placement and whether its verdicts vary with the products rather than with the retailers.
Sources
- FTC's Endorsement Guides: What People Are Asking (opens in a new tab)Federal Trade Commission
- Federal Trade Commission Announces Updated Advertising Guides to Combat Deceptive Reviews and Endorsements (opens in a new tab)Federal Trade Commission, June 29, 2023
- Trade Regulation Rule on the Use of Consumer Reviews and Testimonials (16 CFR Part 465), 89 FR 68034 (opens in a new tab)Federal Register via GovInfo, August 22, 2024
- Federal Trade Commission Announces Final Rule Banning Fake Reviews and Testimonials (opens in a new tab)Federal Trade Commission, August 14, 2024
- Online reviews posted by employees: businesses could be liable (opens in a new tab)Competition Bureau Canada, January 2024
- Write high quality reviews (opens in a new tab)Google Search Central
- Spam policies for Google web search (opens in a new tab)Google Search Central
Researched and written by PlacementGraph Research. Read how we research, source and update these pages. Corrections: diana@placementgraph.com.