An affiliate program pays a content site a commission when a reader it referred buys something or completes an action, like a credit card approval. Almost every established content site runs at least one, and which programs it runs, and how concentrated its revenue is in any single one, tells you a lot about how durable that revenue actually is.
Direct programs vs. affiliate networks
A direct program, like Amazon Associates, is run by one merchant and pays you for referring sales to that merchant specifically. An affiliate network, like Commission Junction (CJ), ShareASale or ClickBank, aggregates commission offers from thousands of individual merchants under one login and one payout, so a site can earn from dozens of brands through a single account instead of applying to each merchant one by one.
Most established content sites run a mix of both: a direct Amazon Associates account for product reviews and roundups, plus one or two networks for niche-specific merchants (a finance site might run credit card offers through CJ, for example). The mix matters because it changes how much control the site owner has, and how exposed the site is if one relationship goes bad.
Amazon Associates
Amazon Associates is the single most common affiliate relationship on retail-focused content sites, since almost any product review or "best of" article can link to an Amazon listing. Commission rates run 1% to 10% depending on product category[1], with categories like luxury beauty and Amazon-branded products at the high end and categories like video games and consumer electronics near the bottom.
The tradeoff for that ubiquity is control you don't have. Amazon sets rates unilaterally and has changed them before: in April 2020, it cut commission rates across several major categories by 50% or more, with no advance negotiation[2]. A site earning most of its affiliate revenue through Amazon has no recourse if that happens again, which is why buyers should treat heavy Amazon concentration as a risk factor, not just a revenue line.
Pros: near-universal product coverage, trusted brand that converts well, simple application, works across almost any retail niche.
Cons: low commission rates relative to niche affiliate offers, rates can be cut without warning or negotiation, a 24-hour cookie window that's short compared to many network offers.
Commission Junction (CJ)
CJ is one of the largest affiliate networks, connecting sites to thousands of merchants across retail, finance, travel and software. It's a common home for finance and insurance content sites specifically, since many major credit card issuers and insurance brands run their affiliate programs through CJ rather than direct.
Pros: access to large, well-known merchants in finance and other high-commission niches, reliable reporting and payout tools, one login for many merchant relationships.
Cons: individual merchant programs inside CJ often require their own approval, so joining CJ doesn't guarantee access to every brand you want, and approval for finance and insurance offers specifically can be slow and isn't guaranteed.
ShareASale
ShareASale (owned by Awin) skews toward small and mid-sized merchants, especially in fashion, home goods and niche e-commerce brands that don't have the scale to run their own affiliate program. It's a common fit for lifestyle and hobby content sites reviewing or recommending specific products.
Pros: a wide catalog of niche merchants that aren't available through the bigger networks, generally faster merchant approval than CJ, transparent commission and cookie-length data per merchant.
Cons: merchants tend to be smaller brands with lower overall order volume than Amazon or CJ's biggest advertisers, so per-merchant revenue is often more modest even at a higher commission rate.
ClickBank
ClickBank specializes in digital products (courses, software, info products) rather than physical retail goods, and pays some of the highest commission rates of any major network, frequently 50% or more on digital products, since there's no manufacturing cost behind the sale. It's a common fit for content sites in fitness, self-improvement and online education niches.
Pros: high commission rates on digital products, instant approval for most merchant offers, weekly payouts.
Cons: product quality varies widely since digital products are easier to list than physical inventory, and refund rates on some offers run higher than physical retail, which can claw back commissions after the fact.
What actually drives affiliate revenue
- Traffic intent, not just traffic volume. A "best credit card for travel" article converts at a far higher rate than a general news post, because the reader is already close to a buying decision. Two sites with identical pageviews can have very different affiliate revenue depending on how commercial the underlying search intent is.
- Commission rate and average order value together, not either alone. A 1% commission on a $2,000 item can outearn a 10% commission on a $20 item, so don't judge a program by its headline rate without checking what readers actually buy.
- Cookie window length. Amazon's 24-hour window means you only get credit if the reader buys within a day of clicking your link. Many network offers run 30 to 90 days, which matters more for considered purchases like software or financial products where readers compare options before buying.
What to check when buying a site with affiliate revenue
- How concentrated the revenue is in one program. A site earning 80% of its affiliate income from Amazon Associates alone carries more platform risk than one spread across Amazon plus two or three network relationships, since a single rate cut or account suspension does proportionally more damage.
- Whether the accounts transfer to you or need re-approval. Amazon Associates and most network programs generally require the new owner to apply under their own name rather than inherit the seller's account, since payouts are tied to a specific taxpayer. Finance and insurance offers specifically can take weeks to re-approve and aren't guaranteed, so build that gap into your transition plan.
- The site's standing with each program. An account flagged for policy violations, like undisclosed affiliate links or prohibited promotional methods, can be terminated outright, and that risk doesn't show up in a revenue chart. Ask the seller directly about any past warnings.
- Whether disclosure is actually compliant. The Federal Trade Commission (FTC) requires clear, conspicuous disclosure of affiliate relationships[3]. A site with sloppy or missing disclosures is exposed to both an FTC complaint and to whichever program it uses discovering the violation and pulling the account.