A website is not just a pretty digital storefront. In online contracting, it can become Exhibit A. The font size, the color of a hyperlink, the distance between a button and a disclosure, and even the amount of visual clutter on a checkout page can influence whether a court says, “Yes, the user agreed,” or “Nice try, but no contract was formed.” That is the practical lesson behind two notable rulings involving online terms: Selden v. Airbnb and Nicosia v. Amazon.
Both cases asked a deceptively simple question: did the user really agree to the website’s terms of service, including arbitration provisions? One court said yes. Another said the issue was not clear enough to decide in Amazon’s favor at an early stage. The difference was not magic legal dust. It was web design.
For e-commerce brands, SaaS companies, marketplaces, app developers, and subscription businesses, the takeaway is huge: online terms are only as strong as the user flow that presents them. You can have a beautifully drafted arbitration clause, a polished limitation of liability, and a privacy policy that looks like it went to finishing school. But if the user never receives reasonably clear notice or does not clearly manifest assent, those terms may wobble like a shopping cart with one bad wheel.
Why Website Design Matters in Online Contract Enforceability
Online contracts usually depend on two core ideas: reasonable notice and manifestation of assent. In plain English, the user must have a fair opportunity to know terms exist, and the user must take an action that reasonably signals agreement. Courts do not require every user to read every word. Let’s be honest: if reading terms of service were a sport, most of us would be benched immediately. But courts do care whether the website made the terms visible, understandable, and connected to the action being taken.
That is where design enters the courtroom. A clickwrap agreement, where users check a box or click a button saying they agree, is usually stronger than a browsewrap agreement, where terms sit somewhere on the site and claim that continued browsing equals acceptance. Between those two sits a growing category often called sign-in-wrap or hybrid agreements. These designs tell users that by creating an account, placing an order, or clicking “Continue,” they agree to linked terms. Courts evaluate those designs closely.
The First Ruling: Airbnb’s Mobile Signup Flow Held Up
In Selden v. Airbnb, the plaintiff alleged discrimination related to Airbnb hosts and Airbnb moved to compel arbitration based on its terms of service. The plaintiff argued that Airbnb’s mobile signup process did not provide adequate notice that creating an account meant agreeing to those terms.
The court disagreed. Airbnb’s mobile screen presented users with signup options such as Facebook, Google, and email. Near those options, the screen included language explaining that by signing up, the user agreed to Airbnb’s Terms of Service, Privacy Policy, and other linked policies. The notice was placed in the middle area of the screen, close to the signup buttons, in legible text with strong contrast against the background.
That combination mattered. The court found the terms notice conspicuous enough for a reasonably observant user. The design did not bury the agreement in a footer, hide it behind a maze of links, or whisper it in pale gray text like a nervous intern. The user actionsigning upwas connected to the notice, and the court concluded that the plaintiff had assented to the terms and was bound to arbitrate.
The Second Ruling: Amazon’s Checkout Page Faced Trouble
Nicosia v. Amazon reached a different result. The plaintiff bought a weight-loss product on Amazon and later sued, alleging the product contained sibutramine, a substance that had been removed from the market. Amazon argued that the plaintiff was bound by a mandatory arbitration provision in its Conditions of Use.
The problem was Amazon’s order page presentation. The page contained language saying that by placing an order, the user agreed to Amazon’s privacy notice and conditions of use. However, that message appeared in smaller text, among many other visual elements. The “Place Your Order” button itself did not clearly say that clicking it meant agreeing to additional terms. The page included various colors, links, buttons, address information, credit card details, shipping options, purchase summaries, and promotional material.
The Second Circuit held that Amazon had not shown, as a matter of law, that the plaintiff was on notice of and agreed to mandatory arbitration. The court did not say Amazon could never prove assent. Instead, it said reasonable minds could disagree about whether the notice was sufficient. That is still a serious warning for website owners: if your checkout page looks like a carnival flyer and your legal notice is playing hide-and-seek, enforceability may become a lawsuit within a lawsuit.
The Big Lesson: UX Design Is Contract Architecture
The contrast between Airbnb and Amazon shows that online contract formation is not only a legal drafting issue. It is a product design issue, a user experience issue, and a risk management issue. A terms link can be legally meaningful only when the surrounding design gives it enough visibility and context.
Courts often examine several design factors: proximity, font size, contrast, hyperlink styling, button language, page clutter, mobile readability, and the overall transaction flow. A blue underlined hyperlink near a clear “I agree” statement is more persuasive than a tiny gray link below a bright purchase button. A page that tells users “By clicking Create Account, you agree to the Terms of Service” is stronger than a page that simply says “Continue.”
Later cases reinforce the same theme. In Meyer v. Uber, the Second Circuit found Uber’s mobile registration screen sufficiently clear because the notice was close to the registration button and the transaction flow reasonably communicated that creating an account meant accepting terms. In Berman v. Freedom Financial Network, the Ninth Circuit rejected arbitration where the web pages did not clearly tell users that clicking “Continue” would bind them to terms and conditions. The design was not just decoration; it determined whether an agreement existed.
Clickwrap, Browsewrap, and Sign-In-Wrap: What’s the Difference?
Clickwrap Agreements
A clickwrap agreement usually requires users to click a checkbox or button that says they agree to terms. This is the gold standard for many online contracts because it creates a clear action tied to assent. For high-risk transactions, recurring billing, arbitration clauses, class-action waivers, or sensitive data practices, clickwrap is often the safest path.
Browsewrap Agreements
Browsewrap terms typically appear through a footer link or general website notice stating that using the site means accepting the terms. Courts are often skeptical of browsewrap because users may never see the terms or understand that ordinary browsing creates a contract. A link in the footer may be useful for transparency, but it is rarely the strongest foundation for enforcing important terms.
Sign-In-Wrap and Hybrid Designs
Sign-in-wrap designs connect terms to an action such as registering, signing in, submitting a form, or placing an order. These can work, but only if the notice is obvious and the action clearly communicates assent. The wording matters. “By clicking Sign Up, you agree to our Terms” is much stronger than “Terms apply” floating somewhere nearby like a legal ghost.
Practical Design Rules for Enforceable Online Terms
Businesses should treat online contracting screens like legal documents with pixels. The first rule is proximity: place the notice immediately next to the button or checkbox that triggers agreement. The second rule is clarity: use direct language explaining that the user’s click means agreement. The third rule is visibility: make the text large enough, high-contrast, and readable on both desktop and mobile.
Hyperlinks should look like hyperlinks. Courts notice whether links are blue, underlined, or otherwise visually distinct. If the terms link blends into the background like camouflage, do not be surprised if a judge refuses to salute it. Businesses should also avoid clutter near the legal notice. Ads, coupons, upsells, loyalty banners, and shipping distractions may weaken the argument that a user saw and understood the terms.
For stronger evidence, companies should keep records of the exact version of the terms presented, the screen design used at the time, timestamps, user actions, IP logs where appropriate, and version histories. Contract enforceability often becomes a proof problem. It is not enough to say, “Our site probably looked like this.” Courts prefer receipts. Digital receipts, in this case.
Why Updates to Online Terms Need Special Care
Changing online terms can be even trickier than forming the original contract. A website cannot always rely on a sentence saying, “We may update these terms at any time.” Courts have often required meaningful notice of material changes, especially when new arbitration clauses, fees, class-action waivers, or privacy-related provisions are added.
Best practice is to notify users directly and, for major changes, require affirmative assent again. That may mean an email notice, an in-app message, a forced clickthrough, or a prominent banner that users cannot miss. Simply posting new terms on a website and expecting users to check regularly is like changing the rules of Monopoly while everyone else is in the kitchen getting snacks. It may not go over well.
Dark Patterns Can Create Legal and Trust Problems
Businesses also need to separate clear assent from manipulative design. The Federal Trade Commission has paid increasing attention to dark patterns, which are interface designs that may manipulate consumers into buying products, surrendering privacy, or taking actions they did not intend. Even when the issue is not contract enforceability, confusing design can create regulatory, reputational, and customer-service problems.
A clean contracting flow should not trick users. It should make important terms easy to find, easy to understand, and clearly connected to the user’s action. The goal is not to trap customers. The goal is to create a durable agreement that a court can recognize and that users will not later feel was smuggled into the transaction wearing a fake mustache.
What These Rulings Mean for E-Commerce and App Teams
For e-commerce teams, the message is direct: checkout design can affect whether arbitration clauses, forum selection clauses, refund rules, subscription terms, and limitation-of-liability provisions are enforceable. Guest checkout deserves particular attention because some courts may view one-time purchases differently from account creation or ongoing memberships.
For app developers, mobile screens require extra discipline. Small screens can help or hurt. Airbnb’s simple mobile screen helped because the notice was not drowned in clutter. But mobile design can also weaken terms if the notice is too small, hidden below the fold, or separated from the action button.
For legal teams, the job is no longer limited to drafting terms and emailing a PDF to product managers. Lawyers should review wireframes, prototypes, button copy, checkout flows, signup screens, and A/B tests. A small design experiment that improves conversion by half a percent may accidentally reduce contract enforceability by a mile.
Specific Examples of Better Website Contract Design
A stronger signup screen might say: “By clicking Create Account, you agree to our Terms of Service and Privacy Policy.” The terms should be linked, visually distinct, and placed directly above or below the button. For important clauses, a checkbox stating “I agree to the Terms of Service” can provide stronger evidence of assent.
A weaker design would use a button that says “Continue” while placing a small gray sentence several lines away saying “Terms apply.” That kind of design invites arguments that the user continued through a form without realizing a contract was being formed. Courts are especially wary when the page includes multiple distractions and the legal message is not visually prominent.
For subscriptions, the page should clearly disclose price, renewal terms, cancellation instructions, trial period details, and agreement language before the user submits payment. For marketplaces, the site should clarify whether the user is agreeing to platform terms, seller terms, payment terms, or all of the above. Legal spaghetti may be delicious to no one.
Conclusion: The Button Is Not Just a Button
The rulings involving Airbnb and Amazon show that website design can decide the fate of online terms. Airbnb’s clear mobile signup flow supported enforceability. Amazon’s more cluttered order page created enough doubt that the court would not enforce arbitration as a matter of law at that stage. The broader message is simple: online contracts need design discipline.
Businesses should use direct language, visible hyperlinks, strong contrast, uncluttered pages, and clear click-to-agree actions. They should involve legal teams early in UX decisions and maintain records of what users saw and clicked. Consumers, meanwhile, should understand that many ordinary online actions may carry legal consequencesbut courts still expect companies to provide fair notice.
In digital commerce, a contract is not only written in words. It is written in layout, hierarchy, color, timing, and user flow. The button may look innocent, but in court, it can have a full-time job.
Experience Notes: What Website Teams Learn the Hard Way
In practical website work, the tension between conversion and contract clarity appears constantly. A design team wants the fastest path to signup. A marketing team wants fewer distractions. A legal team wants unmistakable assent. A product manager wants all of it finished yesterday. That is how terms language sometimes gets squeezed into a pale little sentence under a button, where it technically exists but practically whispers.
The most common experience is that nobody intends to weaken the contract. The designer may reduce the font size to make the screen cleaner. The marketer may add a coupon banner near checkout. The engineer may move the terms notice below a module because it is easier in the component library. Each decision seems harmless. Together, they can create the exact problem courts criticize: a user flow where the agreement language is not close enough, clear enough, or important-looking enough to prove assent.
Another recurring lesson is that screenshots matter. When a dispute arises, companies often need to show what the user saw at the exact time of registration or purchase. That can be harder than expected. Websites change. A/B tests rotate. Mobile layouts differ from desktop layouts. Seasonal promotions appear and disappear. A company may know its terms were linked somewhere, but “somewhere” is not a litigation strategy. Strong teams keep archived screenshots, code versions, terms versions, and event logs tied to the user action.
Guest checkout is another area where experience teaches caution. Businesses love guest checkout because it reduces friction. Customers love it because nobody wants to create a new password just to buy socks. But from a contract standpoint, guest checkout may provide less context for an ongoing relationship. If the company wants arbitration, auto-renewal terms, loyalty terms, or marketplace rules to apply, the checkout screen should say so clearly and directly.
Mobile design creates its own comedy and chaos. A notice that looks clear on a 27-inch monitor may become microscopic on a phone. A hyperlink that appears next to a button on desktop may drop below the fold on mobile. Teams should test the contracting flow on real devices, not just in a beautiful mockup where everything behaves politely.
The best experience-based rule is simple: design the page so an ordinary user could explain what happened. If asked, the user should be able to say, “I clicked this button, and the page told me that clicking meant I agreed to those linked terms.” That sentence is the north star. When the design supports it, the agreement is stronger. When the design fights it, the legal team may need extra coffee.
Note: This article is for general informational and SEO publishing purposes only. It is not legal advice. Businesses should consult qualified counsel before changing online contracting, arbitration, checkout, subscription, privacy, or terms-of-service flows.
