<b>In affiliate marketing, is the last-click winner adding value or just intercepting it?</b>

<b>In affiliate marketing, is the last-click winner adding value or just intercepting it?</b>

A question with real money attached, because affiliate payouts are usually last-click and that creates a specific, exploitable incentive.

<b>The structural problem</b>

Last-click attribution pays whoever owns the final touch. In affiliate, that rewards channels positioned closest to the conversion regardless of whether they created demand — and it invites tactics built purely to <i>capture</i> the last click rather than generate the sale.

<b>The named patterns</b>

— <i>Cookie stuffing:</i> dropping affiliate cookies on users who never engaged, so the affiliate "wins" last-click on conversions they had nothing to do with.
— <i>Brand-bidding and toolbar/coupon interception:</i> the affiliate appears at the exact moment of purchase intent the brand already generated, harvesting credit for demand it didn't create.
— <i>Last-touch hijacking:</i> extensions or pop-unders that fire an affiliate click milliseconds before checkout.

<b>The nuance</b>

Not all last-click affiliates are parasitic — genuine content and review sites can create real consideration. The model itself can't distinguish creation from interception, which is exactly the vulnerability. This is correlation-as-payout: present at conversion is not the same as cause of conversion.

<b>What to actually do</b>

— Layer incrementality logic onto payouts: test whether a top affiliate's traffic is incremental via holdout or new-customer-only commission.
— Watch the gap between an affiliate's last-click share and their assisted/early-touch share; pure last-touch with no upper-funnel presence is a flag.

Bottom line for practitioners: last-click affiliate payouts reward proximity, not contribution. Build incrementality and new-customer conditions into the commission, or you'll keep paying interceptors to stand in front of demand you already made.