What is affiliate marketing? How it works and pays

What is affiliate marketing? Paid referral at internet scale. A business gives you a tracked link. You send people through it. When one of them buys, signs up or fills in a form, the business pays you a commission. If nobody converts, nobody pays, which is why advertisers like it and why it can take a new affiliate months to see a first check.

That is the whole idea. The industry around it is bigger and messier: networks that sit between thousands of advertisers and publishers, tracking systems built on cookies and server callbacks, a long history of fraud, and disclosure rules from the FTC. We run affiliate sites ourselves, mostly in the adult cam and dating niches, so this guide covers the general mechanics and points out where adult programs work differently.

If you only want the short version: pick one niche, build something people actually use, join a program with fair terms, disclose your links, and expect slow early months. The rest of this page explains why.

A short history, from flower shops to Amazon

Paying someone for a referral is older than the web, but the online version has a fairly clear origin story. According to Wikipedia's history of the field¹, William J. Tobin's PC Flowers & Gifts launched on the Prodigy network in 1989, ran an internet beta with IBM in 1994 and had 2,600 affiliate partners by 1995. Tobin filed a patent on affiliate tracking on January 22, 1996, and it was issued in October 2000 as U.S. Patent 6,141,666.

CDNow launched its BuyWeb program in November 1994. Amazon Associates followed in July 1996. Amazon was not first, but its program became the template everyone copied: a bookseller paying websites to link to specific titles, with commissions tracked automatically. Amazon was granted a patent on parts of the program in February 2000.

The networks arrived next. Commission Junction, now CJ, was founded in 1998, per Wikipedia. ClickBank was founded the same year in Boise, Idaho. ShareASale started in Chicago in 2000. The early years were also the spam years: affiliates pushed links through junk email and adware until merchants wrote bans into their terms, and Google started demoting "thin affiliate" pages in the mid-2000s.

How does affiliate marketing work? The four parties

A merchant pays a commission, usually through a network, to an affiliate whose tracked link brought in a customer who bought or signed up.

Every affiliate transaction involves the same cast, even when one company plays two roles.

The merchant or advertiser

The business that sells the product and pays the commission. It sets the rate, the rules about which traffic is allowed, and how long a referral counts. In the adult world, that is a cam site, a dating platform or a subscription product.

The network

The middleman. A network hosts many advertisers' programs, tracks clicks and conversions, handles reporting and sends you one payment instead of fifty. It is common but optional: some merchants run their own programs in-house.

The affiliate or publisher

You. A blog, a YouTube channel, a comparison site, an email list or a media buyer running paid ads. Coursera names bloggers, YouTubers and influencers as typical affiliates. Wikipedia lists the usual methods: SEO, paid search, email, content, display ads and social media.

The customer

The person who clicks and buys. They usually pay the same price whether or not an affiliate referred them. The commission comes out of the merchant's marketing budget, not the customer's pocket.

How do affiliates get paid? Payout models compared

Per sale (CPS), per action such as a sign-up (CPA), per click, or as a recurring revenue share, and the model decides who carries the risk.

The payout model decides who carries the risk. If the advertiser pays per click, a click that never converts costs the advertiser. If it pays per sale, that same click costs you your time and ad spend. Wikipedia, citing a 2012 book by John Colascione, says about 80% of programs then used revenue share or pay per sale and about 19% used cost per action, with pay per click and per impression a small remainder. That data is old, but the shape still holds: most programs pay on results.

Two adult-specific terms are worth knowing. SOI (single opt-in) pays when a user registers. DOI (double opt-in) pays only after the user confirms their email, so it pays more per lead because fewer users get that far. CrakRevenue's homepage, at the time of writing (November 2026), shows sample offer cards for PPS, revshare, DOI and SOI side by side, with figures such as a $60 PPS and a 20% revshare. Treat those as illustrations and check the dashboard for real offers.

Here is how the choice plays out. Say you refer 100 paying cam customers. On a $60 PPS deal you earn $6,000 once. On a 20% revshare, a customer who spends $50 a month earns you $10 a month. If the average customer stays four months, that is $40 each, or $4,000. If they stay a year, it is $120 each, or $12,000. Revshare rewards you for sending loyal buyers, and it punishes you if your traffic churns quickly. You do not know which one your traffic is until you have tracked it for a while, so many affiliates start on flat payouts and switch later.

How is an affiliate sale tracked? Cookies and postbacks

A commission is only as good as the tracking behind it. The classic method is a cookie. When a visitor clicks your link, the network or merchant sets a cookie in their browser with your affiliate ID. If they buy before the cookie expires, the sale is yours.

The length of that window varies a lot, and it matters more than most beginners expect. Amazon Associates is the famous short one: its help pages⁴ credit items added to the cart within a 24-hour session window, as long as they are bought from the cart within 90 days. Other programs run 30 days or more. Most programs also use last-click attribution: if the visitor later clicks another affiliate's link, that affiliate gets the credit.

Pixels versus server-to-server postbacks

There are two ways to report a conversion. A pixel is a small piece of code on the merchant's thank-you page that fires in the visitor's browser and tells the network a sale happened. It is easy to set up, but it depends on the browser, so ad blockers, privacy settings and cleared cookies can stop it from firing.

A server-to-server (S2S) postback skips the browser. When you send a click, you attach a unique click ID to the link. The network stores it. When that visitor converts, the network's server calls a URL on your tracker's server and passes the click ID back, often with the payout and a transaction ID. Your tracker matches the click ID to the original visit and knows exactly which ad, keyword or page produced the sale. Serious media buyers use postbacks, and most networks support them. Our guide to affiliate trackers and postbacks walks through a sample postback URL.

Networks, in-house programs and the size of the market

You can join a merchant's own program or go through a network. In-house programs, like Amazon Associates, give you a direct relationship and sometimes better terms, but you get a separate dashboard and payment schedule for each. Networks trade some margin for convenience: one login, one payment, hundreds of offers, and an affiliate manager who can sometimes get you a better rate once you prove volume.

General networks

• Awin is the large European-rooted network, part of the Axel Springer group. It bought ShareASale in June 2017.
• ShareASale no longer exists as a separate platform. Awin moved its users across and shut ShareASale down on October 6, 2025, per Wikipedia. Older guides that tell you to sign up there are out of date.
• CJ (formerly Commission Junction) dates to 1998, is headquartered in Santa Barbara, California, and is owned by Publicis Groupe.
• impact.com calls itself a partnership management platform rather than a classic network. Brands use it to run their own programs with affiliates, influencers and B2B partners. It says it has handled 1.1 billion partner-driven transactions and hosts more than a million active partnerships.
• ClickBank, founded in 1998, is a marketplace that is best known for digital products, though it now lists physical goods too.

Vertical networks

Many industries have specialist networks, because mainstream ones will not touch them or do not understand the traffic. Adult is the clearest example. CrakRevenue focuses on cam, dating, AI, fansite and gaming offers. On its homepage it claims 15+ years in business and more than 35,000 affiliates. It also runs a referral program that pays you 5% of what affiliates you refer earn, for as long as they stay with the network. If you want to try it, this is our referral link: CrakRevenue may pay us if you join, and it costs you nothing.

Vertical networks usually know their advertisers better, tolerate traffic types that general networks ban, and offer tools built for the niche, such as live cam widgets. The tradeoff is concentration: if one niche has a bad year, so do you.

How big the industry is

Industry-size numbers get repeated a lot without sources, so here are only the ones we could trace. BigCommerce, citing Statista, puts US affiliate marketing spending at $10.72 billion in 2024 and projects about $12 billion for 2025. Going back further, Wikipedia cites a MarketingSherpa estimate that affiliates worldwide earned $6.5 billion in bounties and commissions in 2006, and an e-Consultancy figure of £2.16 billion in UK affiliate network sales that year, up from £1.35 billion in 2005.

Different studies measure different things. Spending, commissions paid and sales driven are three separate numbers, and a sales figure can be many times a commissions figure. When you see a bigger headline number, check which one it is.

On individual earnings, be skeptical of anything you read. Coursera quotes salary sites with average affiliate marketer pay of about $56,000 to $82,000 as of May 2025, but those are salaried marketing jobs, not independent publishers. Independent income is uneven and has no reliable average.

Fraud: what gets affiliates banned or prosecuted

Because affiliates are paid on tracked results, some of them fake the results. Advertisers know this, which is why programs claw back commissions and close accounts with little warning. Three kinds of fraud matter most.

Cookie stuffing

Cookie stuffing drops an affiliate cookie on a visitor who never clicked a link, using hidden iframes, image tags, pop-ups, redirects or browser extensions. If that visitor later buys, the stuffer gets paid for a sale they had nothing to do with. The best-known case is eBay's. Per Wikipedia's account¹¹, eBay worked with the FBI against its largest affiliate, Shawn Hogan, who pleaded guilty to wire fraud in 2014 and was sentenced to five months in federal prison and a $25,000 fine. Another affiliate, Brian Dunning, got 15 months. More recently, browser extensions that overwrite affiliate cookies at checkout have drawn allegations of the same thing, including a pending class action involving PayPal's Honey.

Incentivized traffic

This means paying or rewarding people to sign up: points, gift cards, "sign up to see the rest" schemes. The signups are real but worthless to the advertiser, because those users never intended to buy. Most dating and cam offers ban it outright, and networks reverse commissions when they spot it.

Brand bidding

Brand bidding means buying search ads on the advertiser's own trademark, so you get credit for customers who were already searching for the brand. It has been a fight since Google AdWords launched in 2000. Some advertisers allow it. Many ban it in their terms. Read the terms before you run paid search.

Is affiliate marketing legal? The FTC disclosure rules

Yes, as long as you disclose it: the FTC treats an affiliate link in a recommendation as a material connection that readers must be told about, clearly and close to the link.

In the US, an affiliate link inside a recommendation is a material connection, and the FTC expects you to disclose it. The FTC published its Endorsement Guides in final form in 2009 and revised them in 2023. Its FAQ for businesses¹² is specific about what works.

The disclosure has to be clear and conspicuous, and the FTC says "the closer the disclosure is to your recommendation, the better." A single disclosure on your home page is not enough. Neither is a button labeled DISCLOSURE that readers have to click. Its example wording is plain: "I get commissions for purchases made through links in this post." The FTC says "paid link" next to the link is adequate, while "affiliate link" on its own may not be, because readers might not know what it means.

Google has separate rules for how paid links should be marked in your HTML. We cover both sets of rules in how to start an adult affiliate site.

How do you start affiliate marketing as a beginner?

Pick one niche, choose one channel, join a program with fair terms, disclose your links and track from the first click, then expect slow early months.

Most beginner guides agree on the order, and so do we. BigCommerce and Coursera both start with a niche: something with real demand, decent commissions and an audience you can reach. Then you choose a channel, such as a review site, a topic blog, a YouTube channel or paid ads. Then you join programs, through networks such as Awin, CJ, Impact or ClickBank, or directly with a brand.

Content-led affiliates are slow and cheap. A review or comparison site can take many months to rank, and it costs you mostly time. Paid-traffic affiliates are fast and expensive. You can buy clicks today, but you are spending money to learn, and a beginner's first campaigns usually lose money while the tracking data builds up. If you go that way, read our guide to CPA traffic sources before you fund an account.

A few things separate the people who last from the ones who quit in month three. They build an email list or audience they own, so a Google update or a banned social account does not wipe them out. They spread their income across more than one program, so one advertiser's rate cut does not end the business. And they track everything from the first click, because you cannot improve what you cannot see. BigCommerce's guide gives the same advice: diversify, own your list, watch your numbers.

In adult, the basics are the same, but the restrictions are tighter. Many ad platforms and payment processors will not work with adult sites. Hosting has to allow the content. Offers have strict traffic rules. Our guide to dating CPA offers covers what converts in that vertical, and how cam sites work explains the token economics behind the cam offers.

Key takeaways

• You are paid on results, so the payout model decides who carries the risk. Start on flat payouts and move to revshare once you know your traffic sticks.
• Read the attribution window and traffic restrictions before you promote anything. A 24-hour cookie and a 30-day cookie are very different deals.
• Use server-to-server postbacks if you buy traffic. Pixels miss conversions.
• Pick a network that knows your vertical. ShareASale is gone, and adult offers mostly live on specialist networks.
• Disclose next to the link, in plain words. "Paid link" beats "affiliate link".
• Never stuff cookies, incentivize signups or bid on brand terms without permission. Programs claw back commissions for all three.