Everything on the Site Is Advertising, and It Needs Support
Section 5 of the FTC Act, 15 U.S.C. 45, prohibits unfair or deceptive acts or practices in or affecting commerce. The analysis asks whether a representation, omission or practice is likely to mislead a consumer acting reasonably, and whether it is material to a purchase decision. It reaches express and implied claims and is assessed on the net impression of the whole page, so a footer disclaimer does not cure a false headline. "Consumer" is not limited to individuals buying for personal use, and the marketing site is not outside the sales process.
The governing obligation is substantiation. An advertiser should hold adequate support for an objective claim at the time the claim is made, not assembled later in response to an inquiry — that comes from the FTC's 1984 Policy Statement Regarding Advertising Substantiation. Where the wording implies a level of support, such as "independently tested", the advertiser is expected to hold that level. "Competent and reliable scientific evidence" is a term of art for health, safety and efficacy claims, not a universal standard.
The obligation attaches to anything objective and measurable: performance and return-on-investment claims, uptime and service levels, integration and customer counts, and claims about artificial intelligence capability, which the FTC has publicly warned about. The highest-risk statements on most B2B sites are security and compliance claims — encryption strength, certification status, breach history. They are objective, verifiable, material to the purchase, and typically written by marketing without engineering sign-off. A workable rule is that every number on the site has an owner, a source document and a date.
The Endorsement Guides and Material Connections
The FTC's Guides Concerning the Use of Endorsements and Testimonials in Advertising are at 16 CFR Part 255. The current revision was published in the Federal Register on 26 July 2023. The Guides are administrative interpretations, not legislative rules, and carry no civil penalties themselves, though practices inconsistent with them may be challenged as deceptive under Section 5.
The core obligation is disclosure of a material connection — any connection between endorser and advertiser that the audience would not reasonably expect and that might affect the weight given to the endorsement. It is not limited to cash: free or discounted product, early access, event tickets, travel, and employment or business relationships all qualify. The 2023 revision also defined "clear and conspicuous": unavoidable, and in the same medium and language as the endorsement.
Employees posting about the employer's product are the most common unaddressed exposure — an internal campaign asking staff to share a launch post, with no disclosure instruction, creates undisclosed endorsements at scale. Then officers, managers and their relatives; testimonials given in exchange for a discount or a conference pass; incentivised reviews on software review platforms; and paid analysts and resellers. The Commission looks for a written policy, a disclosure instruction given when the arrangement is made, and monitoring.
The Reviews and Testimonials Rule
The enforceable companion to the Guides is the Trade Regulation Rule on the Use of Consumer Reviews and Testimonials, 16 CFR Part 465. The Commission announced it on 14 August 2024; it was published in the Federal Register on 22 August 2024 at 89 FR 68034 and took effect on 21 October 2024. Because it is a trade regulation rule rather than guidance, violations expose a company to civil penalties and redress, not only a cease-and-desist.
Section 465.2 prohibits fake reviews and testimonials — misrepresenting that a reviewer exists, used the product, or is describing an actual experience. Section 465.4 addresses buying reviews, and its wording repays attention: paying for a review is not prohibited as such; providing compensation or incentives in exchange for, or conditioned on, a review expressing a particular sentiment is. Section 465.5 requires disclosure where an officer or manager writes a review, and prohibits soliciting reviews from employees or their relatives without instructing them to disclose. Section 465.6 reaches company-controlled review sites presented as independent, and section 465.8 buying fake followers.
Section 465.7 is the one ordinary corporate behaviour trips over. It addresses review suppression: unfounded or groundless legal threats or intimidation used to prevent a review or force its removal, and misrepresenting that the reviews displayed represent all or most reviews when negative ones have been suppressed. Gating a testimonial workflow so only satisfied customers reach the public form, then advertising the average as representative, sits within that.
Superiority Claims and the Competitor Reading Your Site
"#1", "fastest", "most secure", "more accurate than" — these are objective claims requiring support. A comparative claim needs substantiation of the comparison as actually made, on a like-for-like basis. An establishment claim, such as "tests prove we are faster", requires the advertiser to hold tests that actually prove it. A "#1" claim needs its basis disclosed: number one in what, measured how, by whom, over what period, in which market. A ranking taken from a self-defined category, or from a badge with undisclosed methodology, is fragile. Puffery is generally not actionable, but the line is contested.
What most B2B companies miss is that the realistic risk is not the FTC. It is a competitor suing under Lanham Act Section 43(a), 15 U.S.C. 1125(a)(1)(B), which creates civil liability for misrepresenting the nature, characteristics or qualities of one's own or another's goods or services in commercial advertising. Remedies go beyond an injunction: 15 U.S.C. 1116 provides injunctive relief and 15 U.S.C. 1117 allows recovery of the defendant's profits, the plaintiff's damages, costs, and fees in exceptional cases. A preliminary injunction can pull a comparison page offline in weeks.
On who may sue, the Supreme Court held in 2014, in Lexmark International v. Static Control Components, that a false advertising plaintiff must fall within the statute's zone of interests by alleging an injury to a commercial interest in reputation or sales, and must show proximate cause — injury flowing directly from the deception. Direct competition is not required, so suppliers and channel partners may sue. A customer may not, and there is no private right of action under the FTC Act.
Case Studies Are Testimonials With a Number Attached
The B2B version of a testimonial is the customer case study, and it carries both problems: it is an endorsement and it contains objective results claims. A case study saying a named customer cut processing time by a stated proportion is a performance claim about the product. Presented on a page implying that is what buyers generally get, it becomes a claim about typical results — and the Guides moved away from curing that with a generic "results not typical" line. Where the advertiser lacks substantiation that the depicted results are what buyers generally achieve, that has to be conveyed, and small type may not fix it.
What makes a results claim defensible is documentation. The customer is named and has approved the wording in writing. The metric is defined: what was measured, against what baseline, over what period, and in what configuration. The source is the customer's own data rather than a sales estimate. Anything given in exchange for the testimonial is disclosed. And the file is kept and dated, so the substantiation exists at publication.
Interface Design, Free Trials, and the Rule That Is Not in Effect
The FTC's Bureau of Consumer Protection published a staff report, "Bringing Dark Patterns to Light", on 15 September 2022. It is a staff report — not a rule, and not a Commission statement of law — cataloguing designs staff view as potentially deceptive or unfair, including those that hide material information or obscure privacy choices. The B2B analogues are pre-checked opt-in boxes and free trials that do not disclose conversion to paid.
The FTC's amended negative option rule, often called the click-to-cancel rule and adopted in October 2024, was vacated by the Eighth Circuit in July 2025 on procedural grounds — a failure to conduct a required preliminary regulatory analysis — not on any holding that its substance was unlawful. The Commission published an advance notice of proposed rulemaking on 13 March 2026, with comments due 13 April 2026. No final rule is in effect.
That does not make the conduct unregulated. ROSCA, at 15 U.S.C. 8403, remains fully operative and requires clear and conspicuous disclosure of material terms before billing information is obtained, express informed consent, and a simple mechanism to stop recurring charges. Section 5 still applies and state automatic renewal laws were untouched. Enterprise contracts negotiated offline are generally outside this; the self-serve tier on the same site often is not.
If It Becomes a Dispute
Advertising disputes are fought over what a page said on a particular date and what supported it at the time. Counsel ends up needing the page reconstructed as published — the chart, the footnote, the disclosure — and needing to establish when it changed, who changed it, and what the preceding version said. On substantiation the questions are when the test was run, on what product versions, and whether the document said to support the claim predates it. That reconstruction and measurement work is what an expert witness is engaged to do.
CMS revision history is often pruned, ad copy variants disappear once paused, and a third-party archive may hold no capture of the date at issue. Capturing the page contemporaneously, with a record of how the capture was made, is far stronger than recovering it afterwards.
Frequently Asked Questions
Do we need proof for a claim before we publish it?
The FTC's position is that an advertiser should have adequate substantiation for an objective claim at the time the claim is made, not assembled later in response to a challenge. Where the wording implies a level of support — "tested", "proven", "studies show" — the expectation is that the advertiser holds that level. Security, compliance and performance claims are the highest-risk category.
Do employees have to disclose when they post about our product?
Under the FTC Endorsement Guides an employment relationship is a material connection the audience would not reasonably expect, so it is generally treated as requiring disclosure, including on personal social posts and third-party software review sites. The reviews rule at 16 CFR Part 465 goes further, addressing solicitation from employees and their relatives without an instruction to disclose.
Can we say we are the #1 provider in our category?
A "#1" claim is an objective claim, and the expectation is that its basis is disclosed and supported: number one in what, measured how, by whom, over what period, in which market. A ranking taken from a self-defined category, or from a badge with undisclosed methodology, is fragile. The practical risk is usually a competitor bringing a Lanham Act claim.
Is the click-to-cancel rule in effect?
No. The amended negative option rule adopted in October 2024 was vacated by the Eighth Circuit in July 2025 on procedural grounds, and the Commission published an advance notice of proposed rulemaking on 13 March 2026. No final rule is in effect. The conduct is still reached by ROSCA at 15 U.S.C. 8403.